diff --git a/app/.gitignore b/app/.gitignore
index 07e2949ebc..b1603225cc 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -2,7 +2,9 @@
 cache
 config-custom.sh
 dist
+lastrev
 staging
+tmp
 xulrunner
 pdftools
 win/resource_hacker
diff --git a/app/build.sh b/app/build.sh
index 893f9fba65..7e0f8eb218 100755
--- a/app/build.sh
+++ b/app/build.sh
@@ -266,14 +266,14 @@ if [ $DEVTOOLS -eq 1 ]; then
 fi
 
 # 5.0.96.3 / 5.0.97-beta.37+ddc7be75c
-VERSION=`perl -ne 'print and last if s/.*<em:version>(.+)<\/em:version>.*/\1/;' install.rdf`
+VERSION=`cat version`
 # 5.0.96 / 5.0.97
-VERSION_NUMERIC=`perl -ne 'print and last if s/.*<em:version>(\d+\.\d+(\.\d+)?).*<\/em:version>.*/\1/;' install.rdf`
+VERSION_NUMERIC=`perl -ne 'print and last if s/^(\d+\.\d+(\.\d+)?).*/\1/;' version`
 if [ -z "$VERSION" ]; then
-	echo "Version number not found in install.rdf"
+	echo "Version number not found in version file"
 	exit 1
 fi
-rm install.rdf
+rm version
 
 echo
 echo "Version: $VERSION"
diff --git a/app/config.sh b/app/config.sh
index a88dfbf931..26a5ed38ad 100644
--- a/app/config.sh
+++ b/app/config.sh
@@ -38,12 +38,6 @@ SIGNTOOL_CERT_SUBJECT="Corporation for Digital Scholarship"
 SIGNTOOL_TIMESTAMP_SERVER="http://timestamp.sectigo.com"
 SIGNTOOL_DELAY=15
 
-# Directory for Zotero code repos
-repo_dir=$( cd "$DIR"/.. && pwd )
-# Directory for Zotero source code
-ZOTERO_SOURCE_DIR="$repo_dir"/zotero-client
-# Directory for Zotero build files (needed for scripts/*_build_and_deploy)
-ZOTERO_BUILD_DIR="$repo_dir"/zotero-build
 # Directory for unpacked binaries
 STAGE_DIR="$DIR/staging"
 # Directory for packed binaries
diff --git a/app/scripts/5.0_beta_build_and_deploy b/app/scripts/5.0_beta_build_and_deploy
index ac71df49cf..d129a61b4d 100755
--- a/app/scripts/5.0_beta_build_and_deploy
+++ b/app/scripts/5.0_beta_build_and_deploy
@@ -2,8 +2,9 @@
 set -euo pipefail
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-ROOT_DIR="$(dirname "$SCRIPT_DIR")"
-. "$ROOT_DIR/config.sh"
+APP_ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+ROOT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+. "$APP_ROOT_DIR/config.sh"
 
 CHANNEL="beta"
 export SAFARI_APPEX="$ROOT_DIR/../safari-app-extension-builds/beta/ZoteroSafariExtension.appex"
@@ -13,11 +14,13 @@ cd "$SCRIPT_DIR"
 
 hash=`./get_repo_branch_hash master`
 source_dir=`./get_commit_files $hash`
+build_dir=`mktemp -d`
 
 function cleanup {
-	rm -rf $source_dir
+	rm -rf "$source_dir"
+	rm -rf "$build_dir"
 }
 trap cleanup EXIT
 
-"$ZOTERO_BUILD_DIR/xpi/build_xpi" -s "$source_dir" -c $CHANNEL -m $hash
-./build_and_deploy -d "$ZOTERO_BUILD_DIR/xpi/build/staging" -p $BUILD_PLATFORMS -c $CHANNEL
+./prepare_build -s "$source_dir" -o "$build_dir" -c $CHANNEL -m $hash
+./build_and_deploy -d "$build_dir" -p $BUILD_PLATFORMS -c $CHANNEL
diff --git a/app/scripts/5.0_dev_build_and_deploy b/app/scripts/5.0_dev_build_and_deploy
index 05fe4254ce..d2f46d811c 100755
--- a/app/scripts/5.0_dev_build_and_deploy
+++ b/app/scripts/5.0_dev_build_and_deploy
@@ -2,8 +2,9 @@
 set -euo pipefail
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-ROOT_DIR="$(dirname "$SCRIPT_DIR")"
-. "$ROOT_DIR/config.sh"
+APP_ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+ROOT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+. "$APP_ROOT_DIR/config.sh"
 
 CHANNEL="dev"
 BRANCH="master"
@@ -14,11 +15,13 @@ cd "$SCRIPT_DIR"
 
 hash=`./get_repo_branch_hash $BRANCH`
 source_dir=`./get_commit_files $hash`
+build_dir=`mktemp -d`
 
 function cleanup {
-	rm -rf $source_dir
+	rm -rf "$source_dir"
+	rm -rf "$build_dir"
 }
 trap cleanup EXIT
 
-"$ZOTERO_BUILD_DIR/xpi/build_xpi" -s "$source_dir" -c $CHANNEL -m $hash
-./build_and_deploy -d "$ZOTERO_BUILD_DIR/xpi/build/staging" -p $BUILD_PLATFORMS -c $CHANNEL -i 1
+./prepare_build -s "$source_dir" -o "$build_dir" -c $CHANNEL -m $hash
+./build_and_deploy -d "$build_dir" -p $BUILD_PLATFORMS -c $CHANNEL -i 1
diff --git a/app/scripts/5.0_release_build_and_deploy b/app/scripts/5.0_release_build_and_deploy
index 357caf7939..1f6b5d82e2 100755
--- a/app/scripts/5.0_release_build_and_deploy
+++ b/app/scripts/5.0_release_build_and_deploy
@@ -2,8 +2,9 @@
 set -euo pipefail
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-ROOT_DIR="$(dirname "$SCRIPT_DIR")"
-. "$ROOT_DIR/config.sh"
+APP_ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+ROOT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+. "$APP_ROOT_DIR/config.sh"
 
 CHANNEL="release"
 BRANCH="master"
@@ -13,11 +14,13 @@ cd "$SCRIPT_DIR"
 
 hash=`./get_repo_branch_hash $BRANCH`
 source_dir=`./get_commit_files $hash`
+build_dir=`mktemp -d`
 
 function cleanup {
-	rm -rf $source_dir
+	rm -rf "$source_dir"
+	rm -rf "$build_dir"
 }
 trap cleanup EXIT
 
-"$ZOTERO_BUILD_DIR/xpi/build_xpi" -s "$source_dir" -c $CHANNEL -m $hash
-./build_and_deploy -d "$ZOTERO_BUILD_DIR/xpi/build/staging" -p $BUILD_PLATFORMS -c $CHANNEL
+./prepare_build -s "$source_dir" -o "$build_dir" -c $CHANNEL -m $hash
+./build_and_deploy -d "$build_dir" -p $BUILD_PLATFORMS -c $CHANNEL
diff --git a/app/scripts/build_and_deploy b/app/scripts/build_and_deploy
index 89de26c3c2..08b8936c9c 100755
--- a/app/scripts/build_and_deploy
+++ b/app/scripts/build_and_deploy
@@ -54,9 +54,9 @@ fi
 
 "$SCRIPT_DIR"/check_requirements
 
-VERSION="`perl -ne 'print and last if s/.*<em:version>(.*)<\/em:version>.*/\1/;' \"$SOURCE_DIR\"/install.rdf`"
+VERSION="`cat \"$SOURCE_DIR\"/version`"
 if [ -z "$VERSION" ]; then
-	echo "Error getting version from $SOURCE_DIR/install.rdf"
+	echo "Error getting version from $SOURCE_DIR/version"
 	exit 1
 fi
 
diff --git a/app/scripts/build_and_run b/app/scripts/build_and_run
index a7aba6e528..f3eddba504 100755
--- a/app/scripts/build_and_run
+++ b/app/scripts/build_and_run
@@ -1,21 +1,8 @@
 #!/bin/bash -e
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-ROOT_DIR="$(dirname "$SCRIPT_DIR")"
-
-# Set ZOTERO_REPOS_DIR to use directory other than $HOME for zotero-client and zotero-standalone-build
-if [ -n "${ZOTERO_REPOS_DIR:-}" ]; then
-	repos_dir=$ZOTERO_REPOS_DIR
-else
-	repos_dir=$HOME
-fi
-
-for dir in zotero-client zotero-standalone-build; do
-	if [ ! -d "$repos_dir/$dir" ]; then
-		echo "$repos_dir/$dir not found" >&2
-		exit 1
-	fi
-done
+APP_ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+ROOT_DIR="$(dirname $APP_ROOT_DIR)"
 
 # Set ZOTERO_PROFILE environment variable to choose profile
 if [ -n "${ZOTERO_PROFILE:-}" ]; then
@@ -57,16 +44,16 @@ if [ $REBUILD -eq 1 ]; then
 	if ! ps u | grep scripts/build.js | grep -v grep > /dev/null; then
 		echo "Running JS build process"
 		echo
-		cd $repos_dir/zotero-client
+		cd $ROOT_DIR
 		npm run build
 		echo
 	fi
 	
-	$repos_dir/zotero-standalone-build/scripts/dir_build -q $PARAMS
+	"$SCRIPT_DIR/dir_build" -q $PARAMS
 	
 	if [ "`uname`" = "Darwin" ]; then
 		# Sign the Word dylib so it works on Apple Silicon
-		$SCRIPT_DIR/codesign_local $repos_dir/zotero-standalone-build/staging/Zotero.app
+		"$SCRIPT_DIR/codesign_local" "$APP_ROOT_DIR/staging/Zotero.app"
 	fi
 fi
 
@@ -89,4 +76,4 @@ else
 	exit 1
 fi
 
-$repos_dir/zotero-standalone-build/staging/$command $profile -ZoteroDebugText -jsconsole -purgecaches $PARAMS "$@"
+"$APP_ROOT_DIR/staging/$command" $profile -ZoteroDebugText -jsconsole -purgecaches $PARAMS "$@"
diff --git a/app/scripts/dir_build b/app/scripts/dir_build
index 41606ff245..ab96f2de6d 100755
--- a/app/scripts/dir_build
+++ b/app/scripts/dir_build
@@ -2,8 +2,9 @@
 set -euo pipefail
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-ROOT_DIR="$(dirname "$SCRIPT_DIR")"
-. "$ROOT_DIR/config.sh"
+APP_ROOT_DIR="$(dirname "$SCRIPT_DIR")"
+ROOT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+. "$APP_ROOT_DIR/config.sh"
 
 function usage {
 	cat >&2 <<DONE
@@ -60,23 +61,23 @@ fi
 
 CHANNEL="source"
 
-VERSION=`perl -ne 'print and last if s/.*<em:version>(.{3}).+/\1/;' "$ZOTERO_SOURCE_DIR/install.rdf"`
-if [ $VERSION = "4.0" ]; then
-	"$ZOTERO_BUILD_DIR/xpi/build_xpi_4.0" "$ZOTERO_SOURCE_DIR" $CHANNEL
-	"$ROOT_DIR/build.sh" -f "$ZOTERO_BUILD_DIR/xpi/build/zotero-build.xpi" -p $PLATFORM -c $CHANNEL -s
-else
-	PARAMS=""
-	if [ $DEVTOOLS -eq 1 ]; then
-		PARAMS+=" -t"
-	fi
-	if [ $quick_build -eq 1 ]; then
-		PARAMS+=" -q"
-	fi
-	
-	hash=`git -C "$ZOTERO_SOURCE_DIR" rev-parse --short HEAD`
-	
-	"$ZOTERO_BUILD_DIR/xpi/build_xpi" -s "$ZOTERO_SOURCE_DIR/build" -c $CHANNEL -m $hash
-	"$ROOT_DIR/build.sh" -d "$ZOTERO_BUILD_DIR/xpi/build/staging" -p $PLATFORM -c $CHANNEL -s $PARAMS
+PARAMS=""
+if [ $DEVTOOLS -eq 1 ]; then
+	PARAMS+=" -t"
+fi
+if [ $quick_build -eq 1 ]; then
+	PARAMS+=" -q"
 fi
 
+hash=`git -C "$ROOT_DIR" rev-parse --short HEAD`
+
+build_dir=`mktemp -d`
+function cleanup {
+	rm -rf $build_dir
+}
+trap cleanup EXIT
+
+"$SCRIPT_DIR/prepare_build" -s "$ROOT_DIR/build" -o "$build_dir" -c $CHANNEL -m $hash
+"$APP_ROOT_DIR/build.sh" -d "$build_dir" -p $PLATFORM -c $CHANNEL -s $PARAMS
+
 echo Done
diff --git a/app/scripts/prepare_build b/app/scripts/prepare_build
index 544dae529d..1236a68d36 100755
--- a/app/scripts/prepare_build
+++ b/app/scripts/prepare_build
@@ -9,7 +9,6 @@ import re
 import fileinput
 from collections import OrderedDict
 import json
-import hashlib
 import traceback
 
 # Hack to combine two argparse formatters
@@ -17,101 +16,59 @@ class CustomFormatter(argparse.ArgumentDefaultsHelpFormatter, argparse.RawDescri
     pass
 
 parser = argparse.ArgumentParser(
-    description='Build a Zotero XPI',
-    formatter_class=CustomFormatter,
-    epilog='''
-Example: build_xpi -s ~/zotero-client/build -x 5.0.1 -z
-  - Builds zotero-build.xpi and update-build.rdf
-  - Points update-build.rdf to https://download.zotero.org/extension/zotero-5.0.1.xpi
-  - Points install.rdf to https://www.zotero.org/download/update.rdf
+    description='Prepare build/ files for the app build process',
+    formatter_class=CustomFormatter)
 
-Example: build_xpi -s ~/zotero-client/build -c beta -m 7c27a9bb5 -x 5.0b2 -r beta -z
-  - Builds zotero-build.xpi and update-build.rdf
-  - Points update-build.rdf to https://download.zotero.org/extension/zotero-5.0b2.xpi
-  - Points install.rdf to https://www.zotero.org/download/update-beta.rdf
-
-Example: build_xpi -s ~/zotero-client/build -c alpha -m 7c27a9bb5 -x 5.0-alpha -r 5.0-branch --xpi-dir dev -z
-  - Builds zotero-build.xpi and update-build.rdf
-  - Points update-build.rdf to https://download.zotero.org/extension/dev/zotero-5.0-alpha.xpi
-  - Points install.rdf to https://zotero.org/download/dev/update-5.0-branch.rdf''')
-
-parser.add_argument('--source-dir', '-s', required=True, metavar='DIR', help='Directory to build from')
+parser.add_argument('--source-dir', '-s', required=True, metavar='BUILD_DIR', help='Directory to build from')
+parser.add_argument('--output-dir', '-o', required=True, metavar='OUTPUT_DIR', help='Directory to write files to')
 parser.add_argument('-c', '--channel', default='source', help='channel to add to dev build version number (e.g., "beta" for "5.0-beta.3+a5f28ca8"), or "release" or "source" to skip')
 parser.add_argument('--commit-hash', '-m', metavar='HASH', help='Commit hash (required for non-release builds)')
-parser.add_argument('--build-suffix', metavar='SUFFIX', default='build', help='suffix of output XPI')
-parser.add_argument('--xpi-suffix', '-x', metavar='SUFFIX', default='', help='suffix of XPI to reference in update.rdf')
-parser.add_argument('--rdf-suffix', '-r', metavar='SUFFIX', default='', help='suffix of update.rdf file to reference in install.rdf (e.g., "beta" for "update-beta.rdf")')
-parser.add_argument('--xpi-dir', metavar='DIR', default='', help='extra directory to point to when referencing the XPI in update.rdf')
-parser.add_argument('--zip', '-z', action='store_true', help="Create XPI instead of leaving files in build/staging")
 
 args = parser.parse_args()
 
 def main():
     try:
-        if args.xpi_suffix:
-            args.xpi_suffix = "-" + args.xpi_suffix
-        if args.rdf_suffix:
-            args.rdf_suffix = "-" + args.rdf_suffix
-        if args.build_suffix:
-            args.build_suffix = "-" + args.build_suffix
+        app_root_dir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
         
-        root_dir = os.path.dirname(os.path.realpath(__file__))
-        
-        # Use BUILD_DIR environmental variable if present, and otherwise ./build
-        build_dir = os.environ.get('BUILD_DIR', os.path.join(root_dir, 'build'))
-        tmp_dir = os.path.join(build_dir, 'tmp')
-        
-        if not os.path.isdir(build_dir):
-            raise Exception(build_dir + " is not a directory")
-        
-        src_dir = args.source_dir
-        if not os.path.isdir(src_dir):
-            raise Exception(src_dir + " is not a directory")
+        lastrev_dir = os.path.join(app_root_dir, 'lastrev')
+        if not os.path.exists(lastrev_dir):
+            os.mkdir(lastrev_dir)
+        tmp_dir = os.path.join(app_root_dir, 'tmp')
         
         if args.commit_hash:
             commit_hash = args.commit_hash[0:9]
         elif args.channel != "release":
             raise Exception("--commit-hash must be specified for non-release builds")
         
+        src_dir = args.source_dir
+        if not os.path.isdir(src_dir):
+            raise Exception(src_dir + " is not a directory")
+        
+        output_dir = args.output_dir
+        if not os.path.isdir(output_dir):
+            raise Exception(output_dir + " is not a directory")
+        if os.listdir(output_dir):
+            raise Exception(output_dir + " is not empty")
+        
         log("Using source directory of " + src_dir)
         os.chdir(src_dir)
         
-        if not os.path.exists('install.rdf'):
-            raise FileNotFoundError("install.rdf not found in {0}".format(src_dir))
+        if not os.path.exists('version'):
+            raise FileNotFoundError("version file not found in {0}".format(src_dir))
         
-        # Extract version number from install.rdf
-        with open('install.rdf') as f:
+        # Extract version number from version file
+        with open('version') as f:
             rdf = f.read()
-        m = re.search('version>([0-9].+)\\.SOURCE</', rdf)
+        m = re.search('([0-9].+)\\.SOURCE', rdf)
         if not m:
-            raise Exception("Version number not found in install.rdf")
+            raise Exception("Version number not found in version file")
         version = m.group(1)
         
-        # Determine build targets
-        target_xpi_file = os.path.join(
-            build_dir, 'zotero' + args.build_suffix + '.xpi'
-        )
-        target_update_file = os.path.join(
-            build_dir, 'update' + args.build_suffix + '.rdf'
-        )
-        staging_dir = os.path.join(build_dir, 'staging')
-        
-        # Delete any existing build targets
-        try:
-            os.remove(target_xpi_file)
-        except OSError:
-            pass
-        try:
-            os.remove(target_update_file)
-        except OSError:
-            pass
-        if os.path.exists(staging_dir):
-            shutil.rmtree(staging_dir)
-        
         # Remove tmp build directory if it already exists
         if os.path.exists(tmp_dir):
             shutil.rmtree(tmp_dir)
         os.mkdir(tmp_dir)
+        
         tmp_src_dir = os.path.join(tmp_dir, 'zotero')
         
         # Export a clean copy of the source tree
@@ -175,25 +132,21 @@ def main():
         with open(os.path.join(tmp_src_dir, 'translators.json'), 'w', encoding='utf-8') as f:
             json.dump(index, f, indent=True, ensure_ascii=False)
         
-        install_file = os.path.join(tmp_src_dir, 'install.rdf')
-        update_file = os.path.join(tmp_src_dir, 'update.rdf')
+        version_file = os.path.join(tmp_src_dir, 'version')
         
+        log('')
         log_line()
-        log('Original install.rdf:')
-        dump_file(install_file)
-        if args.zip:
-            log('Original update.rdf:\n')
-            dump_file(update_file)
-            log_line()
+        log('Original version:\n')
+        dump_file(version_file)
         
-        # Modify install.rdf and update.rdf as necessary
+        # Modify version as necessary
         
         # The dev build revision number is stored in build/lastrev-{version}-{channel}.
         #
         # If we're including it, get the current version number and increment it.
         if args.channel not in ["release", "source"]:
             lastrev_file = os.path.join(
-                build_dir, 'lastrev-{0}-{1}'.format(version, args.channel)
+                lastrev_dir, 'lastrev-{0}-{1}'.format(version, args.channel)
             )
             if not os.path.exists(lastrev_file):
                 with open(lastrev_file, 'w') as f:
@@ -210,68 +163,19 @@ def main():
             rev_sub_str = ".SOURCE.{0}".format(commit_hash)
         else:
             rev_sub_str = "-{0}.{1}+{2}".format(args.channel, str(rev), commit_hash)
-        if args.xpi_dir:
-            xpi_dir = args.xpi_dir + '/'
-        else:
-            xpi_dir = ''
-        # Update install.rdf and update.rdf
-        for line in fileinput.FileInput(install_file, inplace=1):
+        # Update version
+        for line in fileinput.FileInput(version_file, inplace=1):
             line = line.replace('.SOURCE', rev_sub_str)
-            line = line.replace(
-                'update-source.rdf',
-                xpi_dir + 'update' + args.rdf_suffix + '.rdf'
-            )
-            print(line, file=sys.stdout, end='')
-        for line in fileinput.FileInput(update_file, inplace=1):
-            line = line.replace(".SOURCE", rev_sub_str)
-            line = line.replace(
-                'zotero.xpi',
-                xpi_dir + 'zotero' + args.xpi_suffix + '.xpi'
-            )
             print(line, file=sys.stdout, end='')
         
+        log('Modified version:\n')
+        dump_file(version_file)
+        log('')
         log_line()
-        log('Modified install.rdf:\n')
-        dump_file(install_file)
         
-        # Create XPI
-        if args.zip:
-            # Move update.rdf out of code root
-            shutil.move(update_file, tmp_dir)
-            tmp_update_file = os.path.join(tmp_dir, 'update.rdf')
-            
-            os.chdir(tmp_src_dir)
-            tmp_xpi_file = os.path.join(tmp_dir, 'zotero' + args.build_suffix + '.xpi')
-            subprocess.check_call(['zip', '-r', tmp_xpi_file, '.'])
-            
-            # Add SHA1 of XPI to update.rdf
-            sha1 = sha1file(tmp_xpi_file)
-            for line in fileinput.FileInput(tmp_update_file, inplace=1):
-                line = line.replace("sha1:", "sha1:" + sha1)
-                print(line, file=sys.stdout, end='')
-            
-            log('Modified update.rdf:\n')
-            dump_file(tmp_update_file)
-            log_line()
-            
-            # Move files to build directory
-            os.rename(tmp_xpi_file, target_xpi_file)
-            os.rename(tmp_update_file, target_update_file)
-            
-            log("")
-            log("zotero{0}.xpi and update{0}.rdf saved to {1}".format(args.build_suffix, build_dir))
-            log("")
-        # Leave unzipped in staging directory
-        else:
-            # Don't create update.rdf
-            os.remove(update_file)
-            
-            # Move source files to staging
-            shutil.move(tmp_src_dir, staging_dir)
-            
-            log("")
-            log("Build files saved to {0}".format(staging_dir))
-            log("")
+        # Move source files to output directory
+        os.rmdir(output_dir)
+        shutil.move(tmp_src_dir, output_dir)
         
         # Update lastrev file with new revision number
         if args.channel not in ["release", "source"]:
@@ -286,8 +190,8 @@ def main():
     
     # Clean up
     finally:
-        if os.path.exists(tmp_dir):
-            shutil.rmtree(tmp_dir)
+        if os.path.exists(tmp_src_dir):
+            shutil.rmtree(tmp_src_dir)
 
 
 def dump_file(f):
@@ -302,12 +206,5 @@ def log(msg):
 def log_line():
     log('======================================================\n\n')
 
-def sha1file(f):
-    sha1 = hashlib.sha1()
-    with open(f, 'rb') as f:
-        sha1.update(f.read())
-    return sha1.hexdigest()
-
-
 if __name__ == '__main__':
     sys.exit(main())
diff --git a/install.rdf b/install.rdf
deleted file mode 100644
index 4497bf7969..0000000000
--- a/install.rdf
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0"?>
-<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
-     xmlns:em="http://www.mozilla.org/2004/em-rdf#">
-
-  <Description about="urn:mozilla:install-manifest">
-  
-    <em:id>zotero@chnm.gmu.edu</em:id>
-    <em:name>Zotero</em:name>
-    <em:version>7.0.0.SOURCE</em:version>
-    <em:multiprocessCompatible>false</em:multiprocessCompatible>
-    <em:type>2</em:type> <!-- type=extension --> 
-    
-    <!-- Firefox -->
-    <em:targetApplication>
-      <Description>
-        <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
-        <em:minVersion>45.0</em:minVersion>
-        <em:maxVersion>45.*</em:maxVersion>
-      </Description>
-    </em:targetApplication>
-    
-  </Description>
-</RDF>
diff --git a/js-build/config.js b/js-build/config.js
index d09363f581..d941bb1837 100644
--- a/js-build/config.js
+++ b/js-build/config.js
@@ -26,7 +26,6 @@ const copyDirs = [
 // list of files from root folder to symlink
 const symlinkFiles = [
 	'chrome.manifest',
-	'install.rdf',
 	// React needs to be patched by babel-worker.js, so symlink all files in resource/ except for
 	// those. Babel transpilation for React is still disabled in .babelrc.
 	'resource/**/*',
@@ -52,7 +51,6 @@ const symlinkFiles = [
 	'resource/ace/worker-javascript.js',
 	// Feed *.idl files are for documentation only
 	'!resource/feeds/*.idl',
-	'update.rdf',
 	'!chrome/skin/default/zotero/**/*.scss',
 	'!resource/citeproc_rs_wasm.js',
 	// We only need a few Monaco languages
@@ -65,6 +63,7 @@ const symlinkFiles = [
 	'resource/vs/basic-languages/xml/*.js',
 	'resource/vs/language/typescript/*.js',
 	'resource/vs/language/json/*.js',
+	'version',
 ];
 
 
diff --git a/version b/version
new file mode 100644
index 0000000000..4d8e6b1209
--- /dev/null
+++ b/version
@@ -0,0 +1 @@
+7.0.0.SOURCE