diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4b086be..872a2f3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,7 @@ stages:
 
 build:
   stage: build
-  image: texlive/texlive@bf1f2ef09b4e
+  image: texlive/texlive@sha256:bf1f2ef09b4e5ff4f49f692999546185acb148cb32b52ebff52d480181defb14
   script:
     - echo -e "section_start:`date +%s`:rebuild_fc_cache\r\e[0KRebuild Fontconfig cache (docker image bug)"
     - cp $(kpsewhich -var-value TEXMFSYSVAR)/fonts/conf/texlive-fontconfig.conf /etc/fonts/conf.d/09-texlive.conf