diff --git a/Assistant/WebApp/Bootstrap3.hs b/Assistant/WebApp/Bootstrap3.hs
deleted file mode 100644
index 3fa20fc4dd..0000000000
--- a/Assistant/WebApp/Bootstrap3.hs
+++ /dev/null
@@ -1,260 +0,0 @@
-{-# LANGUAGE QuasiQuotes #-}
-{-# LANGUAGE TypeFamilies #-}
-{-# LANGUAGE OverloadedStrings #-}
--- | Helper functions for creating forms when using Bootstrap v3.
--- This is a copy of the Yesod.Form.Bootstrap3 module that has been slightly
--- modified to be compatible with Yesod 1.0.1
-module Assistant.WebApp.Bootstrap3
-  ( -- * Rendering forms
-    renderBootstrap3
-  , BootstrapFormLayout(..)
-  , BootstrapGridOptions(..)
-    -- * Field settings
-  , bfs
-  , withPlaceholder
-  , withAutofocus
-  , withLargeInput
-  , withSmallInput
-    -- * Submit button
-  , bootstrapSubmit
-  , mbootstrapSubmit
-  , BootstrapSubmit(..)
-  ) where
-
-import Control.Arrow (second)
-import Control.Monad (liftM)
-import Data.Text (Text)
-import Data.String (IsString(..))
-import Yesod.Core
-
-import qualified Data.Text as T
-
-import Yesod.Form.Types
-import Yesod.Form.Functions
-
--- | Create a new 'FieldSettings' with the classes that are
--- required by Bootstrap v3.
---
--- Since: yesod-form 1.3.8
-bfs :: RenderMessage site msg => msg -> FieldSettings site
-bfs msg =
-    FieldSettings (SomeMessage msg) Nothing Nothing Nothing [("class", "form-control")]
-
-
--- | Add a placeholder attribute to a field.  If you need i18n
--- for the placeholder, currently you\'ll need to do a hack and
--- use 'getMessageRender' manually.
---
--- Since: yesod-form 1.3.8
-withPlaceholder :: Text -> FieldSettings site -> FieldSettings site
-withPlaceholder placeholder fs = fs { fsAttrs = newAttrs }
-    where newAttrs = ("placeholder", placeholder) : fsAttrs fs
-
-
--- | Add an autofocus attribute to a field.
---
--- Since: yesod-form 1.3.8
-withAutofocus :: FieldSettings site -> FieldSettings site
-withAutofocus fs = fs { fsAttrs = newAttrs }
-    where newAttrs = ("autofocus", "autofocus") : fsAttrs fs
-
-
--- | Add the @input-lg@ CSS class to a field.
---
--- Since: yesod-form 1.3.8
-withLargeInput :: FieldSettings site -> FieldSettings site
-withLargeInput fs = fs { fsAttrs = newAttrs }
-    where newAttrs = addClass "input-lg" (fsAttrs fs)
-
-
--- | Add the @input-sm@ CSS class to a field.
---
--- Since: yesod-form 1.3.8
-withSmallInput :: FieldSettings site -> FieldSettings site
-withSmallInput fs = fs { fsAttrs = newAttrs }
-    where newAttrs = addClass "input-sm" (fsAttrs fs)
-
-
-addClass :: Text -> [(Text, Text)] -> [(Text, Text)]
-addClass klass []                    = [("class", klass)]
-addClass klass (("class", old):rest) = ("class", T.concat [old, " ", klass]) : rest
-addClass klass (other         :rest) = other : addClass klass rest
-
-
--- | How many bootstrap grid columns should be taken (see
--- 'BootstrapFormLayout').
---
--- Since: yesod-form 1.3.8
-data BootstrapGridOptions =
-    ColXs !Int
-  | ColSm !Int
-  | ColMd !Int
-  | ColLg !Int
-    deriving (Eq, Ord, Show)
-
-toColumn :: BootstrapGridOptions -> String
-toColumn (ColXs 0) = ""
-toColumn (ColSm 0) = ""
-toColumn (ColMd 0) = ""
-toColumn (ColLg 0) = ""
-toColumn (ColXs columns) = "col-xs-" ++ show columns
-toColumn (ColSm columns) = "col-sm-" ++ show columns
-toColumn (ColMd columns) = "col-md-" ++ show columns
-toColumn (ColLg columns) = "col-lg-" ++ show columns
-
-toOffset :: BootstrapGridOptions -> String
-toOffset (ColXs 0) = ""
-toOffset (ColSm 0) = ""
-toOffset (ColMd 0) = ""
-toOffset (ColLg 0) = ""
-toOffset (ColXs columns) = "col-xs-offset-" ++ show columns
-toOffset (ColSm columns) = "col-sm-offset-" ++ show columns
-toOffset (ColMd columns) = "col-md-offset-" ++ show columns
-toOffset (ColLg columns) = "col-lg-offset-" ++ show columns
-
-addGO :: BootstrapGridOptions -> BootstrapGridOptions -> BootstrapGridOptions
-addGO (ColXs a) (ColXs b) = ColXs (a+b)
-addGO (ColSm a) (ColSm b) = ColSm (a+b)
-addGO (ColMd a) (ColMd b) = ColMd (a+b)
-addGO (ColLg a) (ColLg b) = ColLg (a+b)
-addGO a b     | a > b = addGO b a
-addGO (ColXs a) other = addGO (ColSm a) other
-addGO (ColSm a) other = addGO (ColMd a) other
-addGO (ColMd a) other = addGO (ColLg a) other
-addGO (ColLg _) _     = error "Yesod.Form.Bootstrap.addGO: never here"
-
-
--- | The layout used for the bootstrap form.
---
--- Since: yesod-form 1.3.8
-data BootstrapFormLayout =
-    BootstrapBasicForm
-  | BootstrapInlineForm
-  | BootstrapHorizontalForm
-      { bflLabelOffset :: !BootstrapGridOptions
-      , bflLabelSize   :: !BootstrapGridOptions
-      , bflInputOffset :: !BootstrapGridOptions
-      , bflInputSize   :: !BootstrapGridOptions
-      }
-    deriving (Show)
-
-
--- | Render the given form using Bootstrap v3 conventions.
---
--- Sample Hamlet for 'BootstrapHorizontalForm':
---
--- >  <form .form-horizontal role=form method=post action=@{ActionR} enctype=#{formEnctype}>
--- >    ^{formWidget}
--- >    ^{bootstrapSubmit MsgSubmit}
---
--- Since: yesod-form 1.3.8
-renderBootstrap3 :: BootstrapFormLayout -> FormRender sub master a
-renderBootstrap3 formLayout aform fragment = do
-    (res, views') <- aFormToForm aform
-    let views = views' []
-        has (Just _) = True
-        has Nothing  = False
-        widget = [whamlet|
-            #{fragment}
-            $forall view <- views
-              <div .form-group :fvRequired view:.required :not $ fvRequired view:.optional :has $ fvErrors view:.has-error>
-                $case formLayout
-                  $of BootstrapBasicForm
-                    $if nequals (fvId view) bootstrapSubmitId
-                      <label for=#{fvId view}>#{fvLabel view}
-                    ^{fvInput view}
-                    ^{helpWidget view}
-                  $of BootstrapInlineForm
-                    $if nequals (fvId view) bootstrapSubmitId
-                      <label .sr-only for=#{fvId view}>#{fvLabel view}
-                    ^{fvInput view}
-                    ^{helpWidget view}
-                  $of BootstrapHorizontalForm _a _b _c _d
-                    $if nequals (fvId view) bootstrapSubmitId
-                      <label .control-label .#{toOffset (bflLabelOffset formLayout)} .#{toColumn (bflLabelSize formLayout)} for=#{fvId view}>#{fvLabel view}
-                      <div .#{toOffset (bflInputOffset formLayout)} .#{toColumn (bflInputSize formLayout)}>
-                        ^{fvInput view}
-                        ^{helpWidget view}
-                    $else
-                      <div .#{toOffset (addGO (bflInputOffset formLayout) (addGO (bflLabelOffset formLayout) (bflLabelSize formLayout)))} .#{toColumn (bflInputSize formLayout)}>
-                        ^{fvInput view}
-                        ^{helpWidget view}
-                |]
-    return (res, widget)
-  where
-    nequals a b = a /= b -- work around older hamlet versions not liking /=
-
--- | (Internal) Render a help widget for tooltips and errors.
-helpWidget :: FieldView sub master -> GWidget sub master ()
-helpWidget view = [whamlet|
-    $maybe tt <- fvTooltip view
-      <span .help-block>#{tt}
-    $maybe err <- fvErrors view
-      <span .help-block>#{err}
-|]
-
-
--- | How the 'bootstrapSubmit' button should be rendered.
---
--- Since: yesod-form 1.3.8
-data BootstrapSubmit msg =
-    BootstrapSubmit
-        { bsValue   :: msg
-          -- ^ The text of the submit button.
-        , bsClasses :: Text
-          -- ^ Classes added to the @<button>@.
-        , bsAttrs   :: [(Text, Text)]
-          -- ^ Attributes added to the @<button>@.
-        } deriving (Show)
-
-instance IsString msg => IsString (BootstrapSubmit msg) where
-    fromString msg = BootstrapSubmit (fromString msg) " btn-default " []
-
-
--- | A Bootstrap v3 submit button disguised as a field for
--- convenience.  For example, if your form currently is:
---
--- > Person <$> areq textField "Name"    Nothing
--- >        <*> areq textField "Surname" Nothing
---
--- Then just change it to:
---
--- > Person <$> areq textField "Name"    Nothing
--- >        <*> areq textField "Surname" Nothing
--- >        <*  bootstrapSubmit "Register"
---
--- (Note that @<*@ is not a typo.)
---
--- Alternatively, you may also just create the submit button
--- manually as well in order to have more control over its
--- layout.
---
--- Since: yesod-form 1.3.8
-bootstrapSubmit :: (RenderMessage master msg) => BootstrapSubmit msg -> AForm sub master ()
-bootstrapSubmit = formToAForm . liftM (second return) . mbootstrapSubmit
-
-
--- | Same as 'bootstrapSubmit' but for monadic forms.  This isn't
--- as useful since you're not going to use 'renderBootstrap3'
--- anyway.
---
--- Since: yesod-form 1.3.8
-mbootstrapSubmit :: (RenderMessage master msg) => BootstrapSubmit msg -> MForm sub master (FormResult (), FieldView sub master)
-mbootstrapSubmit (BootstrapSubmit msg classes attrs) =
-    let res = FormSuccess ()
-        widget = [whamlet|<button class="btn #{classes}" type=submit *{attrs}>_{msg}|]
-        fv  = FieldView { fvLabel    = ""
-                        , fvTooltip  = Nothing
-                        , fvId       = bootstrapSubmitId
-                        , fvInput    = widget
-                        , fvErrors   = Nothing
-                        , fvRequired = False }
-    in return (res, fv)
-
-
--- | A royal hack.  Magic id used to identify whether a field
--- should have no label.  A valid HTML4 id which is probably not
--- going to clash with any other id should someone use
--- 'bootstrapSubmit' outside 'renderBootstrap3'.
-bootstrapSubmitId :: Text
-bootstrapSubmitId = "b:ootstrap___unique__:::::::::::::::::submit-id"
diff --git a/Assistant/WebApp/Common.hs b/Assistant/WebApp/Common.hs
index 6dd4217bc2..eb5adfd7f1 100644
--- a/Assistant/WebApp/Common.hs
+++ b/Assistant/WebApp/Common.hs
@@ -5,8 +5,6 @@
  - Licensed under the GNU AGPL version 3 or higher.
  -}
 
-{-# LANGUAGE CPP #-}
-
 module Assistant.WebApp.Common (module X) where
 
 import Assistant.Common as X
@@ -15,9 +13,5 @@ import Assistant.WebApp.Page as X
 import Assistant.WebApp.Form as X
 import Assistant.WebApp.Types as X
 import Assistant.WebApp.RepoId as X
-#if MIN_VERSION_yesod(1,2,0)
 import Utility.Yesod as X hiding (textField, passwordField, insertBy, replace, joinPath, deleteBy, delete, insert, Key, Option)
-#else
-import Utility.Yesod as X hiding (textField, passwordField, selectField, selectFieldList, insertBy, replace, joinPath, deleteBy, delete, insert, Key, Option)
-#endif
 import Data.Text as X (Text)
diff --git a/Assistant/WebApp/Configurators/Local.hs b/Assistant/WebApp/Configurators/Local.hs
index 30fc0cab01..8e44418e0f 100644
--- a/Assistant/WebApp/Configurators/Local.hs
+++ b/Assistant/WebApp/Configurators/Local.hs
@@ -50,18 +50,10 @@ data RepositoryPath = RepositoryPath Text
  -
  - Validates that the path entered is not empty, and is a safe value
  - to use as a repository. -}
-#if MIN_VERSION_yesod(1,2,0)
 repositoryPathField :: forall (m :: * -> *). (MonadIO m, HandlerSite m ~ WebApp) => Bool -> Field m Text
-#else
-repositoryPathField :: forall sub. Bool -> Field sub WebApp Text
-#endif
 repositoryPathField autofocus = Field
-#if ! MIN_VERSION_yesod_form(1,2,0)
-	{ fieldParse = parse
-#else
 	{ fieldParse = \l _ -> parse l
 	, fieldEnctype = UrlEncoded
-#endif
 	, fieldView = view
 	}
   where
diff --git a/Assistant/WebApp/Configurators/Ssh.hs b/Assistant/WebApp/Configurators/Ssh.hs
index 12c5433473..21427a826b 100644
--- a/Assistant/WebApp/Configurators/Ssh.hs
+++ b/Assistant/WebApp/Configurators/Ssh.hs
@@ -86,11 +86,7 @@ mkSshInput s = SshInput
 	, inputPort = sshPort s
 	}
 
-#if MIN_VERSION_yesod(1,2,0)
 sshInputAForm :: Field Handler Text -> SshInput -> AForm Handler SshInput
-#else
-sshInputAForm :: Field WebApp WebApp Text -> SshInput -> AForm WebApp WebApp SshInput
-#endif
 sshInputAForm hostnamefield d = normalize <$> gen
   where
 	gen = SshInput
diff --git a/Assistant/WebApp/Form.hs b/Assistant/WebApp/Form.hs
index a093dbb9e0..4a19e2b1b5 100644
--- a/Assistant/WebApp/Form.hs
+++ b/Assistant/WebApp/Form.hs
@@ -8,28 +8,15 @@
 {-# LANGUAGE FlexibleContexts, TypeFamilies, QuasiQuotes #-}
 {-# LANGUAGE MultiParamTypeClasses, TemplateHaskell #-}
 {-# LANGUAGE OverloadedStrings, RankNTypes #-}
-{-# LANGUAGE CPP #-}
 
 module Assistant.WebApp.Form where
 
 import Assistant.WebApp.Types
 import Assistant.Gpg
 
-#if MIN_VERSION_yesod(1,2,0)
 import Yesod hiding (textField, passwordField)
 import Yesod.Form.Fields as F
-#else
-import Yesod hiding (textField, passwordField, selectField, selectFieldList)
-import Yesod.Form.Fields as F hiding (selectField, selectFieldList)
-import Data.String (IsString (..))
-import Control.Monad (unless)
-import Data.Maybe (listToMaybe)
-#endif
-#if MIN_VERSION_yesod_form(1,3,8)
 import Yesod.Form.Bootstrap3 as Y hiding (bfs)
-#else
-import Assistant.WebApp.Bootstrap3 as Y hiding (bfs)
-#endif
 import Data.Text (Text)
 
 {- Yesod's textField sets the required attribute for required fields.
@@ -61,60 +48,8 @@ passwordField = F.passwordField
 |]
 	}
 
-{- In older Yesod versions attrs is written into the <option> tag instead of the
- - surrounding <select>. This breaks the Bootstrap 3 layout of select fields as
- - it requires the "form-control" class on the <select> tag.
- - We need to change that to behave the same way as in newer versions.
- -}
-#if ! MIN_VERSION_yesod(1,2,0)
-selectFieldList :: (Eq a, RenderMessage master FormMessage, RenderMessage master msg) => [(msg, a)] -> Field sub master a
-selectFieldList = selectField . optionsPairs
-
-selectField :: (Eq a, RenderMessage master FormMessage) => GHandler sub master (OptionList a) -> Field sub master a
-selectField = selectFieldHelper
-	(\theId name attrs inside -> [whamlet|<select ##{theId} name=#{name} *{attrs}>^{inside}|]) -- outside
-	(\_theId _name isSel -> [whamlet|<option value=none :isSel:selected>_{MsgSelectNone}|]) -- onOpt
-	(\_theId _name _attrs value isSel text -> [whamlet|<option value=#{value} :isSel:selected>#{text}|]) -- inside
-
-selectFieldHelper :: (Eq a, RenderMessage master FormMessage)
-	=> (Text -> Text -> [(Text, Text)] -> GWidget sub master () -> GWidget sub master ())
-	-> (Text -> Text -> Bool -> GWidget sub master ())
-	-> (Text -> Text -> [(Text, Text)] -> Text -> Bool -> Text -> GWidget sub master ())
-	-> GHandler sub master (OptionList a) -> Field sub master a
-selectFieldHelper outside onOpt inside opts' = Field
-	{ fieldParse = \x -> do
-		opts <- opts'
-		return $ selectParser opts x
-	, fieldView = \theId name attrs val isReq -> do
-		opts <- fmap olOptions $ lift opts'
-		outside theId name attrs $ do
-			unless isReq $ onOpt theId name $ not $ render opts val `elem` map optionExternalValue opts
-			flip mapM_ opts $ \opt -> inside
-				theId
-				name
-				((if isReq then (("required", "required"):) else id) attrs)
-				(optionExternalValue opt)
-				((render opts val) == optionExternalValue opt)
-				(optionDisplay opt)
-	}
-  where
-	render _ (Left _) = ""
-	render opts (Right a) = maybe "" optionExternalValue $ listToMaybe $ filter ((== a) . optionInternalValue) opts
-	selectParser _ [] = Right Nothing
-	selectParser opts (s:_) = case s of
-		"" -> Right Nothing
-		"none" -> Right Nothing
-		x -> case olReadExternal opts x of
-			Nothing -> Left $ SomeMessage $ MsgInvalidEntry x
-			Just y -> Right $ Just y
-#endif
-
 {- Makes a note widget be displayed after a field. -}
-#if MIN_VERSION_yesod(1,2,0)
 withNote :: (Monad m, ToWidget (HandlerSite m) a) => Field m v -> a -> Field m v
-#else
-withNote :: Field sub master v -> GWidget sub master () -> Field sub master v
-#endif
 withNote field note = field { fieldView = newview }
   where
 	newview theId name attrs val isReq = 
@@ -122,11 +57,7 @@ withNote field note = field { fieldView = newview }
 		in [whamlet|^{fieldwidget}&nbsp;&nbsp;<span>^{note}</span>|]
 
 {- Note that the toggle string must be unique on the form. -}
-#if MIN_VERSION_yesod(1,2,0)
 withExpandableNote :: (Monad m, ToWidget (HandlerSite m) w) => Field m v -> (String, w) -> Field m v
-#else
-withExpandableNote :: Field sub master v -> (String, GWidget sub master ()) -> Field sub master v
-#endif
 withExpandableNote field (toggle, note) = withNote field $ [whamlet|
 <a .btn .btn-default data-toggle="collapse" data-target="##{ident}">#{toggle}</a>
 <div ##{ident} .collapse>
@@ -136,11 +67,7 @@ withExpandableNote field (toggle, note) = withNote field $ [whamlet|
 	ident = "toggle_" ++ toggle
 
 {- Adds a check box to an AForm to control encryption. -}
-#if MIN_VERSION_yesod(1,2,0)
 enableEncryptionField :: (RenderMessage site FormMessage) => AForm (HandlerT site IO) EnableEncryption
-#else
-enableEncryptionField :: RenderMessage master FormMessage => AForm sub master EnableEncryption
-#endif
 enableEncryptionField = areq (selectFieldList choices) (bfs "Encryption") (Just SharedEncryption)
   where
 	choices :: [(Text, EnableEncryption)]
diff --git a/Assistant/WebApp/Notifications.hs b/Assistant/WebApp/Notifications.hs
index f880c978da..8d4a86cc7b 100644
--- a/Assistant/WebApp/Notifications.hs
+++ b/Assistant/WebApp/Notifications.hs
@@ -5,13 +5,7 @@
  - Licensed under the GNU AGPL version 3 or higher.
  -}
 
-{-# LANGUAGE CPP, QuasiQuotes, TemplateHaskell, OverloadedStrings #-}
-
-#if defined VERSION_yesod_default
-#if ! MIN_VERSION_yesod_default(1,1,0)
-#define WITH_OLD_YESOD
-#endif
-#endif
+{-# LANGUAGE QuasiQuotes, TemplateHaskell, OverloadedStrings #-}
 
 module Assistant.WebApp.Notifications where
 
@@ -26,9 +20,7 @@ import Utility.WebApp
 
 import Data.Text (Text)
 import qualified Data.Text as T
-#ifndef WITH_OLD_YESOD
 import qualified Data.Aeson.Types as Aeson
-#endif
 
 {- Add to any widget to make it auto-update using long polling.
  -
@@ -42,15 +34,9 @@ import qualified Data.Aeson.Types as Aeson
  -}
 autoUpdate :: Text -> Route WebApp -> Int -> Int -> Widget
 autoUpdate tident geturl ms_delay ms_startdelay = do
-#ifdef WITH_OLD_YESOD
-	let delay = show ms_delay
-	let startdelay = show ms_startdelay
-	let ident = "'" ++ T.unpack tident ++ "'"
-#else
 	let delay = Aeson.String (T.pack (show ms_delay))
 	let startdelay = Aeson.String (T.pack (show ms_startdelay))
 	let ident = Aeson.String tident
-#endif
 	$(widgetFile "notifications/longpolling")
 
 {- Notifier urls are requested by the javascript, to avoid allocation
diff --git a/Assistant/WebApp/Types.hs b/Assistant/WebApp/Types.hs
index 8c29449be7..ad2b93b3cc 100644
--- a/Assistant/WebApp/Types.hs
+++ b/Assistant/WebApp/Types.hs
@@ -8,7 +8,6 @@
 {-# LANGUAGE TypeFamilies, QuasiQuotes, MultiParamTypeClasses #-}
 {-# LANGUAGE TemplateHaskell, OverloadedStrings, RankNTypes #-}
 {-# LANGUAGE FlexibleInstances, FlexibleContexts, ViewPatterns #-}
-{-# LANGUAGE CPP #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 
 module Assistant.WebApp.Types where
@@ -83,58 +82,30 @@ instance Yesod WebApp where
 instance RenderMessage WebApp FormMessage where
 	renderMessage _ _ = defaultFormMessage
 
-#if MIN_VERSION_yesod(1,2,0)
 instance LiftAnnex Handler where
-#else
-instance LiftAnnex (GHandler sub WebApp) where
-#endif
 	liftAnnex a = ifM (noAnnex <$> getYesod)
 		( error "internal liftAnnex"
 		, liftAssistant $ liftAnnex a
 		)
 
-#if MIN_VERSION_yesod(1,2,0)
 instance LiftAnnex (WidgetT WebApp IO) where
-#else
-instance LiftAnnex (GWidget WebApp WebApp) where
-#endif
 	liftAnnex = liftH . liftAnnex
 
 class LiftAssistant m where
 	liftAssistant :: Assistant a -> m a
 
-#if MIN_VERSION_yesod(1,2,0)
 instance LiftAssistant Handler where
-#else
-instance LiftAssistant (GHandler sub WebApp) where
-#endif
 	liftAssistant a = liftIO . flip runAssistant a
 		=<< assistantData <$> getYesod
 
-#if MIN_VERSION_yesod(1,2,0)
 instance LiftAssistant (WidgetT WebApp IO) where
-#else
-instance LiftAssistant (GWidget WebApp WebApp) where
-#endif
 	liftAssistant = liftH . liftAssistant
 
-#if MIN_VERSION_yesod(1,2,0)
 type MkMForm x = MForm Handler (FormResult x, Widget)
-#else
-type MkMForm x = MForm WebApp WebApp (FormResult x, Widget)
-#endif
 
-#if MIN_VERSION_yesod(1,2,0)
 type MkAForm x = AForm Handler x
-#else
-type MkAForm x = AForm WebApp WebApp x
-#endif
 
-#if MIN_VERSION_yesod(1,2,0)
 type MkField x = Monad m => RenderMessage (HandlerSite m) FormMessage => Field m x
-#else
-type MkField x = RenderMessage master FormMessage => Field sub master x
-#endif
 
 data RepoSelector = RepoSelector
 	{ onlyCloud :: Bool
@@ -154,12 +125,6 @@ data RemovableDrive = RemovableDrive
 data RepoKey = RepoKey KeyId | NoRepoKey
 	deriving (Read, Show, Eq, Ord)
 
-#if ! MIN_VERSION_path_pieces(0,1,4)
-instance PathPiece Bool where
-	toPathPiece = pack . show
-	fromPathPiece = readish . unpack
-#endif
-
 instance PathPiece RemovableDrive where
 	toPathPiece = pack . show
 	fromPathPiece = readish . unpack
diff --git a/Utility/WebApp.hs b/Utility/WebApp.hs
index 54f2d6f2b7..ce6a61c42d 100644
--- a/Utility/WebApp.hs
+++ b/Utility/WebApp.hs
@@ -94,11 +94,7 @@ fixSockAddr addr = addr
 -- disable buggy sloworis attack prevention code
 webAppSettings :: Settings
 
-#if MIN_VERSION_warp(2,1,0)
 webAppSettings = setTimeout halfhour defaultSettings
-#else
-webAppSettings = defaultSettings { settingsTimeout = halfhour }
-#endif
   where
 	halfhour = 30 * 60
 
@@ -155,11 +151,7 @@ lookupRequestField k req = fromMaybe "" . lookup k $ Wai.requestHeaders req
 
 {- Rather than storing a session key on disk, use a random key
  - that will only be valid for this run of the webapp. -}
-#if MIN_VERSION_yesod(1,2,0)
 webAppSessionBackend :: Yesod.Yesod y => y -> IO (Maybe Yesod.SessionBackend)
-#else
-webAppSessionBackend :: Yesod.Yesod y => y -> IO (Maybe (Yesod.SessionBackend y))
-#endif
 webAppSessionBackend _ = do
 	g <- newGenIO :: IO SystemRandom
 	case genBytes 96 g of
@@ -170,18 +162,8 @@ webAppSessionBackend _ = do
   where
 	timeout = 120 * 60 -- 120 minutes
 	use key =
-#if MIN_VERSION_yesod(1,2,0)
 		Just . Yesod.clientSessionBackend key . fst
 			<$> Yesod.clientSessionDateCacher timeout
-#else
-#if MIN_VERSION_yesod(1,1,7)
-		Just . Yesod.clientSessionBackend2 key . fst
-			<$> Yesod.clientSessionDateCacher timeout
-#else
-		return $ Just $
-			Yesod.clientSessionBackend key timeout
-#endif
-#endif
 
 #ifdef WITH_WEBAPP_SECURE
 type AuthToken = SecureMem
@@ -219,11 +201,7 @@ genAuthToken = do
  - Note that the usual Yesod error page is bypassed on error, to avoid
  - possibly leaking the auth token in urls on that page!
  -}
-#if MIN_VERSION_yesod(1,2,0)
 checkAuthToken :: (Monad m, Yesod.MonadHandler m) => (Yesod.HandlerSite m -> AuthToken) -> m Yesod.AuthResult
-#else
-checkAuthToken :: forall t sub. (t -> AuthToken) -> Yesod.GHandler sub t Yesod.AuthResult
-#endif
 checkAuthToken extractAuthToken = do
 	webapp <- Yesod.getYesod
 	req <- Yesod.getRequest
diff --git a/Utility/Yesod.hs b/Utility/Yesod.hs
index 231bb291ee..a8055d34de 100644
--- a/Utility/Yesod.hs
+++ b/Utility/Yesod.hs
@@ -19,70 +19,38 @@ module Utility.Yesod
 #endif
 #if ! MIN_VERSION_yesod(1,4,0)
 	, withUrlRenderer
-#endif
-#if ! MIN_VERSION_yesod(1,2,0)
-	, Html
 #endif
 	) where
 
-#if MIN_VERSION_yesod(1,2,0)
 import Yesod as Y
-#else
-import Yesod as Y hiding (Html)
-#endif
-#if MIN_VERSION_yesod_form(1,3,8)
 import Yesod.Form.Bootstrap3 as Y hiding (bfs)
-#else
-import Assistant.WebApp.Bootstrap3 as Y hiding (bfs)
-#endif
 #ifndef __NO_TH__
 import Yesod.Default.Util
 import Language.Haskell.TH.Syntax (Q, Exp)
-#if MIN_VERSION_yesod_default(1,1,0)
 import Data.Default (def)
 import Text.Hamlet hiding (Html)
 #endif
-#endif
 #if ! MIN_VERSION_yesod(1,4,0)
-#if MIN_VERSION_yesod(1,2,0)
 import Data.Text (Text)
 #endif
-#endif
 
 #ifndef __NO_TH__
 widgetFile :: String -> Q Exp
-#if ! MIN_VERSION_yesod_default(1,1,0)
-widgetFile = widgetFileNoReload
-#else
 widgetFile = widgetFileNoReload $ def
 	{ wfsHamletSettings = defaultHamletSettings
 		{ hamletNewlines = AlwaysNewlines
 		}
 	}
-#endif
 
 hamletTemplate :: FilePath -> FilePath
 hamletTemplate f = globFile "hamlet" f
 #endif
 
 {- Lift Handler to Widget -}
-#if MIN_VERSION_yesod(1,2,0)
 liftH :: Monad m => HandlerT site m a -> WidgetT site m a
 liftH = handlerToWidget
-#else
-liftH :: MonadLift base m => base a -> m a
-liftH = lift
-#endif
 
-{- Misc new names for stuff. -}
-#if ! MIN_VERSION_yesod(1,2,0)
-withUrlRenderer :: forall master sub. HtmlUrl (Route master) -> GHandler sub master RepHtml
-withUrlRenderer = hamletToRepHtml
-
-type Html = RepHtml
-#else
 #if ! MIN_VERSION_yesod_core(1,2,20)
 withUrlRenderer :: MonadHandler m => ((Route (HandlerSite m) -> [(Text, Text)] -> Text) -> output) -> m output
 withUrlRenderer = giveUrlRenderer
 #endif
-#endif
diff --git a/debian/changelog b/debian/changelog
index ad08554d8e..e71152bd7d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,8 @@
 git-annex (5.20150421) UNRELEASED; urgency=medium
 
   * S3: Enable debug logging when annex.debug or --debug is set.
+  * Dropped support for older versions of yesod and warp than the ones
+    in Debian Jessie.
 
  -- Joey Hess <id@joeyh.name>  Tue, 21 Apr 2015 15:54:10 -0400
 
diff --git a/debian/control b/debian/control
index 85a3e67e6d..f49751251e 100644
--- a/debian/control
+++ b/debian/control
@@ -33,13 +33,15 @@ Build-Depends:
 	libghc-stm-dev (>= 2.3),
 	libghc-dbus-dev (>= 0.10.3) [linux-any],
 	libghc-fdo-notify-dev (>= 0.3) [linux-any],
-	libghc-yesod-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
-	libghc-yesod-static-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
-	libghc-yesod-default-dev [i386 amd64 kfreebsd-amd64 powerpc],
+	libghc-yesod-dev (>= 1.2.6.1) [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
+	libghc-yesod-core-dev (>= 1.2.19) [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
+	libghc-yesod-form-dev (>= 1.3.15) [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
+	libghc-yesod-static-dev (>= 1.2.4) [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
+	libghc-yesod-default-dev (>= 1.2.0) [i386 amd64 kfreebsd-amd64 powerpc],
 	libghc-hamlet-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
 	libghc-shakespeare-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
 	libghc-clientsession-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
-	libghc-warp-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
+	libghc-warp-dev (>= 3.0.0.5) [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
 	libghc-warp-tls-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
 	libghc-wai-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
 	libghc-wai-extra-dev [i386 amd64 kfreebsd-i386 kfreebsd-amd64 powerpc],
diff --git a/debian/copyright b/debian/copyright
index 7b9807680f..322d68f045 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -28,10 +28,6 @@ Files: Utility/Gpg.hs Utility/DirWatcher*
 Copyright: © 2010-2014 Joey Hess <id@joeyh.name>
 License: GPL-3+
 
-Files: Assistant/WebApp/Bootstrap3.hs
-Copyright: 2010 Michael Snoyman
-License: BSD-2-clause
-
 Files: doc/logo* */favicon.ico standalone/osx/git-annex.app/Contents/Resources/git-annex.icns standalone/android/icons/*
 Copyright: 2007 Henrik Nyh <http://henrik.nyh.se/>
            2010 Joey Hess <id@joeyh.name>
diff --git a/git-annex.cabal b/git-annex.cabal
index e49bb9a587..dc17732246 100644
--- a/git-annex.cabal
+++ b/git-annex.cabal
@@ -199,10 +199,17 @@ Executable git-annex
 
   if flag(Webapp)
     Build-Depends:
-     yesod, yesod-default, yesod-static, yesod-form, yesod-core,
-     wai, wai-extra, warp, warp-tls,
+     yesod (>= 1.2.6), 
+     yesod-default (>= 1.2.0),
+     yesod-static (>= 1.2.4),
+     yesod-form (>= 1.3.15),
+     yesod-core (>= 1.2.19),
+     path-pieces (>= 0.1.4),
+     warp (>= 3.0.0.5),
+     warp-tls,
+     wai, wai-extra,
      blaze-builder, crypto-api, hamlet, clientsession,
-     template-haskell, aeson, path-pieces,
+     template-haskell, aeson,
      shakespeare
     CPP-Options: -DWITH_WEBAPP
   if flag(Webapp) && flag (Webapp-secure)