diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4bc0cb07fe..0d559ef3cb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,6 +11,11 @@ before_script:
 cache:
   paths:
     - _ccache/
+    - subprojects/gdk-pixbuf/
+    - subprojects/glib/
+    - subprojects/graphene/
+    - subprojects/libepoxy/
+    - subprojects/pango/
 
 build:
   stage: build