diff --git a/.github/workflows/build_ci.yml b/.github/workflows/build_ci.yml
index 221bb3c..7b4fdad 100644
--- a/.github/workflows/build_ci.yml
+++ b/.github/workflows/build_ci.yml
@@ -64,7 +64,7 @@ jobs:
           fi
         fi
 
-        echo "Build: [$(date +"%D %T")] [${GITHUB_REF_NAME}] [${GITHUB_SHA}]" > ./overlay/version.txt
+        echo "Build: [$(date +"%F %T")] [${GITHUB_REF_NAME}] [${GITHUB_SHA}]" > ./overlay/version.txt
 
         DOCKER_PUSH="true"
         if [[ ${DOCKER_IMAGE} != 'docker.io/josh5/steam-headless' ]]; then