diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 75d475824..f52bf2892 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -53,7 +53,7 @@ clang_format:
     - master
   before_script:
     - apt-get update
-    - apt-get install --yes --no-install-recommends git clang-format-11
+    - apt-get install --yes --no-install-recommends git clang-format-13
   script:
-    - find . \( -name "*.cpp" -or -name "*.h"  -or -name "*.c"  -or -name "*.cc" \) -exec clang-format-11 -i {} \;
+    - find . \( -name "*.cpp" -or -name "*.h"  -or -name "*.c"  -or -name "*.cc" \) -exec clang-format-13 -i {} \;
     - git diff --exit-code
diff --git a/README.clang-format b/README.clang-format
index 19d1038dc..90f17dc62 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 11 on CI. Unfortunately clang-format is not totally
+We are using clang-format 13 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
diff --git a/core/document.cpp b/core/document.cpp
index d827970d0..a4a08cb36 100644
--- a/core/document.cpp
+++ b/core/document.cpp
@@ -48,13 +48,13 @@
 #include <QWindow>
 #include <QtAlgorithms>
 
+#include <KApplicationTrader>
 #include <KAuthorized>
 #include <KConfigDialog>
 #include <KFormat>
 #include <KIO/Global>
 #include <KLocalizedString>
 #include <KMacroExpander>
-#include <KApplicationTrader>
 #include <KPluginMetaData>
 #include <KProcess>
 #include <KRun>