diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b462e1360601d3cd92c26031bd791a57d8b374ff..c407d955789f0ea4e9668347057d9ea23110e2bd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,6 +20,7 @@ variables:
     key: "$CI_JOB_NAME"
     paths:
     - _opam/
+    - ~/.opam
     - ~/.rustup/toolchains
     - ~/.rustup/update-hashes
     - ~/.rustup/settings.toml