diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6a64c9110..87b227388 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@ variables:
   CARGOFLAGS: ""
   CI_SERVER_NAME: "GitLab CI"
 cache:
-  key: "$CI_BUILD_STAGE/$CI_BUILD_REF_NAME"
+  key: "$CI_BUILD_STAGE-$CI_BUILD_REF_NAME"
   untracked: true
 linux-stable:
   stage: build
@@ -485,7 +485,7 @@ darwin:
     name: "x86_64-apple-darwin_parity"
 windows:
   cache:
-    key: "%CI_BUILD_STAGE%/%CI_BUILD_REF_NAME%"
+    key: "%CI_BUILD_STAGE%-%CI_BUILD_REF_NAME%"
     untracked: true
   stage: build
   only: