diff --git a/.vsts-ci.yml b/.vsts-ci.yml
index b552a182f..d7369c7d1 100644
--- a/.vsts-ci.yml
+++ b/.vsts-ci.yml
@@ -213,7 +213,7 @@ stages:
               _TestArg: ''
             Build_Linux_musl_Debug_x64:
               _BuildConfig: Debug
-              _DockerParameter: '--docker alpine.3.6'
+              _DockerParameter: '--docker alpine.3.13'
               _LinuxPortable: ''
               _RuntimeIdentifier: '--runtime-id linux-musl-x64'
               _BuildArchitecture: 'x64'
@@ -258,7 +258,7 @@ stages:
               _TestArg: ''
             Build_Linux_musl_Release_x64:
               _BuildConfig: Release
-              _DockerParameter: '--docker alpine.3.6'
+              _DockerParameter: '--docker alpine.3.13'
               _LinuxPortable: ''
               _RuntimeIdentifier: '--runtime-id linux-musl-x64'
               _BuildArchitecture: 'x64'
diff --git a/eng/docker/alpine.3.6/Dockerfile b/eng/docker/alpine.3.13/Dockerfile
similarity index 93%
rename from eng/docker/alpine.3.6/Dockerfile
rename to eng/docker/alpine.3.13/Dockerfile
index cebae7d69..272f9596a 100644
--- a/eng/docker/alpine.3.6/Dockerfile
+++ b/eng/docker/alpine.3.13/Dockerfile
@@ -4,7 +4,7 @@
 #
 
 # Dockerfile that creates a container suitable to build dotnet-cli
-FROM mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.6-3148f11-20171119021156
+FROM mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.13-20210714125444-ae5be29
 
 RUN apk update && apk upgrade && apk add --no-cache curl ncurses