diff --git a/VERSION_MATRIX.md b/VERSION_MATRIX.md
index f43744a303fff1012492b4314bd87eea43f8a4b9..d423073dfcf373a26cafbb1572eaf1d6867efb05 100644
--- a/VERSION_MATRIX.md
+++ b/VERSION_MATRIX.md
@@ -4,12 +4,12 @@ Topmost entry = Tag `latest`
 
 | GHC        | Cabal    | Stack      | LLVM | Linux distro |
 |:-----------|:---------|:-----------|:---- |:-------------|
-| 9.10.1     | 3.12.1.0 | 3.1.1      | 18   | Alpine 3.20  |
-| 9.8.4      | 3.10.3.0 | 3.1.1      | 16   | Alpine 3.20  |
+| 9.10.1     | 3.12.1.0 | 3.1.1      | 18   | Alpine 3.21  |
+| 9.8.4      | 3.10.3.0 | 3.1.1      | 16   | Alpine 3.21  |
 | 9.8.3      | 3.10.3.0 | 3.1.1      | 16   | Alpine 3.20  |
 | 9.8.2      | 3.10.3.0 | 3.1.1      | 16   | Alpine 3.20  |
 | 9.8.1      | 3.10.2.1 | 2.15.1     | 14   | Alpine 3.19  |
-| 9.6.6      | 3.10.3.0 | 3.1.1      | 16   | Alpine 3.20  |
+| 9.6.6      | 3.10.3.0 | 3.1.1      | 16   | Alpine 3.21  |
 | 9.6.5      | 3.10.3.0 | 2.15.7     | 16   | Alpine 3.20  |
 | 9.6.4      | 3.10.3.0 | 2.15.5     | 14   | Alpine 3.19  |
 | 9.6.3      | 3.10.1.0 | 2.13.1     | 14   | Alpine 3.19  |
diff --git a/latest.Dockerfile b/latest.Dockerfile
index 4ecc97bbf126b6e2b625fcd19b6d50cc4018726c..9316579ba58a773a2847e2fcfaf435d3dba9279a 100644
--- a/latest.Dockerfile
+++ b/latest.Dockerfile
@@ -84,7 +84,7 @@ RUN cabal update \
   ## See https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/libraries/version-history
   && cabal install "cabal-install-$CABAL_VERSION"
 
-FROM alpine:3.20 AS ghc-base
+FROM alpine:3.21 AS ghc-base
 
 ARG IMAGE_LICENSE="MIT"
 ARG IMAGE_SOURCE="https://gitlab.b-data.ch/ghc/ghc-musl"
diff --git a/prior/9.6.6.Dockerfile b/prior/9.6.6.Dockerfile
index e6701e11a6883eb1f2d538e692344a27942f0d86..92c66469e62c244d96dc2ba5fb3ba3ac803422c6 100644
--- a/prior/9.6.6.Dockerfile
+++ b/prior/9.6.6.Dockerfile
@@ -78,7 +78,7 @@ RUN cabal update \
   ## See https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/libraries/version-history
   && cabal install "cabal-install-$CABAL_VERSION"
 
-FROM alpine:3.20 AS ghc-base
+FROM alpine:3.21 AS ghc-base
 
 LABEL org.opencontainers.image.licenses="MIT" \
       org.opencontainers.image.source="https://gitlab.b-data.ch/ghc/ghc-musl" \
diff --git a/prior/9.8.4.Dockerfile b/prior/9.8.4.Dockerfile
index 90f4672beae75208e5848a0437eea681617784dd..e288ce20d2a904dcc84bf645b6fc44139f374f65 100644
--- a/prior/9.8.4.Dockerfile
+++ b/prior/9.8.4.Dockerfile
@@ -78,7 +78,7 @@ RUN cabal update \
   ## See https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/libraries/version-history
   && cabal install "cabal-install-$CABAL_VERSION"
 
-FROM alpine:3.20 AS ghc-base
+FROM alpine:3.21 AS ghc-base
 
 ARG IMAGE_LICENSE="MIT"
 ARG IMAGE_SOURCE="https://gitlab.b-data.ch/ghc/ghc-musl"