diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8148b53..c51e285 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@ prepare:
     ZIPFILE: packer_${PACKER_VERSION}_linux_amd64.zip
   stage: setup
   cache:
-    key: binaries
+    key: "binaries_packer-$PACKER_VERSION"
     paths:
       - bin
   script:
@@ -37,7 +37,7 @@ packer:
      - rootfs.tar.gz
     expire_in: 2 weeks
   cache:
-    key: binaries
+    key: "binaries_packer-$PACKER_VERSION"
     paths:
       - bin
     policy: pull