diff --git a/itk_wasm_env.bash b/itk_wasm_env.bash
index 444dbc8f5..35afabf54 100755
--- a/itk_wasm_env.bash
+++ b/itk_wasm_env.bash
@@ -10,7 +10,7 @@ if test "$OSTYPE" = "cygwin" || test "$OSTYPE" = "msys" || test "$OSTYPE" = "win
     export CXXFLAGS="/Zc:__cplusplus /Zc:preprocessor /DNOMINMAX"
 fi
 
-export ITK_WASM_DEV_DOCKER_TAG=${ITK_WASM_DEV_DOCKER_TAG:-$(echo $(date '+%Y%m%d')-$(git rev-parse --short HEAD))}
+export ITK_WASM_DEV_DOCKER_TAG=${ITK_WASM_DEV_DOCKER_TAG:-$(echo $(date '+%Y%m%d')-$(git rev-parse --short=9 HEAD))}
 
 export ITK_WASM_DCMTK_REPOSITORY=${ITK_WASM_DCMTK_REPOSITORY:-"https://github.com/InsightSoftwareConsortium/DCMTK"}
 # 20240311_DCMTK_PATCHES_FOR_ITK-wasm-3
diff --git a/src/docker/RELEASE.md b/src/docker/RELEASE.md
index 6b3f2d5ad..a76b74a22 100644
--- a/src/docker/RELEASE.md
+++ b/src/docker/RELEASE.md
@@ -18,7 +18,7 @@ pixi run build-docker-images --with-debug
 pnpm clean && pnpm install && pnpm build && pnpm test
 
 git add -- packages/core/typescript/itk-wasm/src/cli/default-image-tag.js
-git commit -m "feat(itk-wasm-cli): update default Docker image for $(date '+%Y%m%d')-$(git rev-parse --short HEAD)"
+git commit -m "feat(itk-wasm-cli): update default Docker image for $(date '+%Y%m%d')-$(git rev-parse --short=9 HEAD)"
 ```
 
 ## Building with a Local ITK Repository
diff --git a/src/docker/itk-wasm-base/build.sh b/src/docker/itk-wasm-base/build.sh
index 1dc808220..8e317628d 100755
--- a/src/docker/itk-wasm-base/build.sh
+++ b/src/docker/itk-wasm-base/build.sh
@@ -6,8 +6,8 @@ script_dir="`cd $(dirname $0); pwd`"
 source "$script_dir/../oci_exe.sh"
 exe=$(ociExe)
 
-TAG=$(date '+%Y%m%d')-$(git rev-parse --short HEAD)
-VCS_REF=$(git rev-parse --short HEAD)
+TAG=$(date '+%Y%m%d')-$(git rev-parse --short=9 HEAD)
+VCS_REF=$(git rev-parse --short=9 HEAD)
 VCS_URL="https://github.com/InsightSoftwareConsortium/ITK-Wasm"
 BUILD_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
 
diff --git a/src/docker/itk-wasm/build.sh b/src/docker/itk-wasm/build.sh
index 6d363edae..04feae58e 100755
--- a/src/docker/itk-wasm/build.sh
+++ b/src/docker/itk-wasm/build.sh
@@ -16,8 +16,8 @@ $cp_exe -a ../../../src/emscripten-module ./ITKWebAssemblyInterfaceModuleCopy/sr
 mkdir -p median-filter-pipelineCopy
 $cp_exe -a ../../../packages/core/typescript/itk-wasm/test/pipelines/median-filter-pipeline/{CMakeLists.txt,median-filter-test.cxx} ./median-filter-pipelineCopy
 
-TAG=$(date '+%Y%m%d')-$(git rev-parse --short HEAD)
-VCS_REF=$(git rev-parse --short HEAD)
+TAG=$(date '+%Y%m%d')-$(git rev-parse --short=9 HEAD)
+VCS_REF=$(git rev-parse --short=9 HEAD)
 VCS_URL="https://github.com/InsightSoftwareConsortium/ITK-Wasm"
 BUILD_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
 
diff --git a/src/docker/push.sh b/src/docker/push.sh
index 55a0a03e6..eae9ba094 100755
--- a/src/docker/push.sh
+++ b/src/docker/push.sh
@@ -19,7 +19,7 @@ for param; do
 done
 set -- "${newparams[@]}"  # overwrites the original positional params
 
-TAG=$(date '+%Y%m%d')-$(git rev-parse --short HEAD)
+TAG=$(date '+%Y%m%d')-$(git rev-parse --short=9 HEAD)
 host_arch=$(uname -m | sed -e 's/x86_64/amd64/' -e 's/aarch64/arm64/')
 other_arch=$(if [ "$host_arch" == "amd64" ]; then echo "arm64"; else echo "amd64"; fi)