diff --git a/9.10/bullseye/Dockerfile b/9.10/bullseye/Dockerfile
index 5690984..c6d2178 100644
--- a/9.10/bullseye/Dockerfile
+++ b/9.10/bullseye/Dockerfile
@@ -23,7 +23,7 @@ RUN apt-get update && \
         zlib1g-dev && \
     rm -rf /var/lib/apt/lists/*
 
-ARG STACK=2.15.7
+ARG STACK=3.1.1
 ARG STACK_RELEASE_KEY=C5705533DA4F78D8664B5DC0575159689BEFB442
 
 RUN set -eux; \
@@ -33,10 +33,10 @@ RUN set -eux; \
     # sha256 from https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz.sha256
     case "$ARCH" in \
         'aarch64') \
-            STACK_SHA256='f0c4b038c7e895902e133a2f4c4c217e03c4be44aa5da48aec9f7947f4af090b'; \
+            STACK_SHA256='033cb75bad3a5299b522c99e8056915bd081879f5df312e6d44d7511fc567455'; \
             ;; \
         'x86_64') \
-            STACK_SHA256='4e635d6168f7578a5694a0d473c980c3c7ed35d971acae969de1fd48ef14e030'; \
+            STACK_SHA256='d096125ea3d987a55d17f7d4f8599ee2fd96bd2d0f033566e28ddfe248f730f9'; \
             ;; \
         *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
     esac; \
diff --git a/9.10/slim-bullseye/Dockerfile b/9.10/slim-bullseye/Dockerfile
index bfcf91f..1810f81 100644
--- a/9.10/slim-bullseye/Dockerfile
+++ b/9.10/slim-bullseye/Dockerfile
@@ -23,7 +23,7 @@ RUN apt-get update && \
         zlib1g-dev && \
     rm -rf /var/lib/apt/lists/*
 
-ARG STACK=2.15.7
+ARG STACK=3.1.1
 ARG STACK_RELEASE_KEY=C5705533DA4F78D8664B5DC0575159689BEFB442
 
 RUN set -eux; \
@@ -33,10 +33,10 @@ RUN set -eux; \
     # sha256 from https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz.sha256
     case "$ARCH" in \
         'aarch64') \
-            STACK_SHA256='f0c4b038c7e895902e133a2f4c4c217e03c4be44aa5da48aec9f7947f4af090b'; \
+            STACK_SHA256='033cb75bad3a5299b522c99e8056915bd081879f5df312e6d44d7511fc567455'; \
             ;; \
         'x86_64') \
-            STACK_SHA256='4e635d6168f7578a5694a0d473c980c3c7ed35d971acae969de1fd48ef14e030'; \
+            STACK_SHA256='d096125ea3d987a55d17f7d4f8599ee2fd96bd2d0f033566e28ddfe248f730f9'; \
             ;; \
         *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
     esac; \
diff --git a/9.6/bullseye/Dockerfile b/9.6/bullseye/Dockerfile
index ffe069d..fe9ad88 100644
--- a/9.6/bullseye/Dockerfile
+++ b/9.6/bullseye/Dockerfile
@@ -23,7 +23,7 @@ RUN apt-get update && \
         zlib1g-dev && \
     rm -rf /var/lib/apt/lists/*
 
-ARG STACK=2.15.5
+ARG STACK=3.1.1
 ARG STACK_RELEASE_KEY=C5705533DA4F78D8664B5DC0575159689BEFB442
 
 RUN set -eux; \
@@ -33,10 +33,10 @@ RUN set -eux; \
     # sha256 from https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz.sha256
     case "$ARCH" in \
         'aarch64') \
-            STACK_SHA256='52cd9d9c2ee4dbf2841bba856f5fca15fbf6ba23fced7256aa3f7c8b76381c91'; \
+            STACK_SHA256='033cb75bad3a5299b522c99e8056915bd081879f5df312e6d44d7511fc567455'; \
             ;; \
         'x86_64') \
-            STACK_SHA256='d55f8554932aad23f7b1198e0d5ebe332073d73fe60e3f324d0b315c156d8c43'; \
+            STACK_SHA256='d096125ea3d987a55d17f7d4f8599ee2fd96bd2d0f033566e28ddfe248f730f9'; \
             ;; \
         *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
     esac; \
diff --git a/9.6/slim-bullseye/Dockerfile b/9.6/slim-bullseye/Dockerfile
index 837726b..fbd978a 100644
--- a/9.6/slim-bullseye/Dockerfile
+++ b/9.6/slim-bullseye/Dockerfile
@@ -23,7 +23,7 @@ RUN apt-get update && \
         zlib1g-dev && \
     rm -rf /var/lib/apt/lists/*
 
-ARG STACK=2.15.5
+ARG STACK=3.1.1
 ARG STACK_RELEASE_KEY=C5705533DA4F78D8664B5DC0575159689BEFB442
 
 RUN set -eux; \
@@ -33,10 +33,10 @@ RUN set -eux; \
     # sha256 from https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz.sha256
     case "$ARCH" in \
         'aarch64') \
-            STACK_SHA256='52cd9d9c2ee4dbf2841bba856f5fca15fbf6ba23fced7256aa3f7c8b76381c91'; \
+            STACK_SHA256='033cb75bad3a5299b522c99e8056915bd081879f5df312e6d44d7511fc567455'; \
             ;; \
         'x86_64') \
-            STACK_SHA256='d55f8554932aad23f7b1198e0d5ebe332073d73fe60e3f324d0b315c156d8c43'; \
+            STACK_SHA256='d096125ea3d987a55d17f7d4f8599ee2fd96bd2d0f033566e28ddfe248f730f9'; \
             ;; \
         *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
     esac; \