diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0ca08354e7cb1a18c417e7ff76ba6064d46fcbd4..a97057627c71695007accf356f22c62573dfe48e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: alpine
+image: alpine:3.15
 
 unit_test:
   stage: test