diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d008cd5f..2d3f5f73 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -32,7 +32,7 @@ clang_format:
   image: debian:testing
   before_script:
     - apt-get update
-    - apt-get install --yes --no-install-recommends git clang-format-10
+    - apt-get install --yes --no-install-recommends git clang-format-11
   script:
-    - find . \( -name "*.cpp" -or -name "*.h"  -or -name "*.c"  -or -name "*.cc" \) -exec clang-format-10 -i {} \;
+    - find . \( -name "*.cpp" -or -name "*.h"  -or -name "*.c"  -or -name "*.cc" \) -exec clang-format-11 -i {} \;
     - git diff --exit-code
diff --git a/README.clang-format b/README.clang-format
index 79f95796..f5654bfb 100644
--- a/README.clang-format
+++ b/README.clang-format
@@ -7,7 +7,7 @@ To get the clang-format warnings locally instead at CI time we recommend you
 to copy the hooks/pre-commit to your .git
     cp hooks/pre-commit .git/hooks/
 
-We are using clang-format 10 on CI. Unfortunately clang-format is not totally
+We are using clang-format 11 on CI. Unfortunately clang-format is not totally
 compatible with older versions of itself. If CI gives you trouble but your local
 clang-format disagrees, just apply the changes suggested by CI and then commit
 with the --no-verify flag. If you get stuck, don't hesitate to ask the reviewer