diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 509cadeac4a28f3b3cd18c49ec7727f546b55773..98e2c39dfdd3a4360290d8831af934fe812c2eed 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -32,6 +32,9 @@ vio:
     cat build-log-vio.txt  | egrep "[a-zA-Z0-9_/-]+ \(user: [0-9]" | tee build-time-vio.txt
   only:
   - master
+  cache:
+    paths:
+    - coq/ra/*.vio
   artifacts:
     paths:
     - coq/ra/build-time-vio.txt