diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0490935e9..1c8851c08 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,9 +1,10 @@
 # SPDX-FileCopyrightText: 2020-2021 Laurent Montel <montel@kde.org>
 # SPDX-License-Identifier: CC0-1.0
 
 include:
   - project: sysadmin/ci-utilities
     file:
+      - /gitlab-templates/yaml-lint.yml
       - /gitlab-templates/linux-qt6.yml
       - /gitlab-templates/freebsd-qt6.yml
       - /gitlab-templates/flatpak.yml
diff --git a/.kde-ci.yml b/.kde-ci.yml
index 26f3f82f6..3e9a79e06 100644
--- a/.kde-ci.yml
+++ b/.kde-ci.yml
@@ -1,29 +1,29 @@
 # SPDX-FileCopyrightText: None
 # SPDX-License-Identifier: CC0-1.0
 
 Dependencies:
 - 'on': ['Linux', 'FreeBSD', 'Windows']
   'require':
     'frameworks/extra-cmake-modules': '@latest-kf6'
-    'pim/kmime' : '@same'
-    'pim/libkleo' : '@same'
-    'pim/kidentitymanagement' : '@same'
-    'pim/kmailtransport' : '@same'
+    'pim/kmime': '@same'
+    'pim/libkleo': '@same'
+    'pim/kidentitymanagement': '@same'
+    'pim/kmailtransport': '@same'
     'frameworks/kcmutils': '@latest-kf6'
     'frameworks/kcodecs': '@latest-kf6'
     'frameworks/kconfig': '@latest-kf6'
     'frameworks/kconfigwidgets': '@latest-kf6'
     'frameworks/kcoreaddons': '@latest-kf6'
     'frameworks/kcrash': '@latest-kf6'
     'frameworks/ki18n': '@latest-kf6'
     'frameworks/kiconthemes': '@latest-kf6'
     'frameworks/kitemmodels': '@latest-kf6'
     'frameworks/kio': '@latest-kf6'
     'frameworks/kwidgetsaddons': '@latest-kf6'
     'frameworks/kwindowsystem': '@latest-kf6'
     'frameworks/kxmlgui': '@latest-kf6'
     'frameworks/kstatusnotifieritem': '@latest-kf6'
-    'pim/mimetreeparser' : '@same'
+    'pim/mimetreeparser': '@same'
 
 Options:
-  require-passing-tests-on: [ 'Linux', 'FreeBSD' ]      
+  require-passing-tests-on: ['Linux', 'FreeBSD']
diff --git a/.yamllint.yml b/.yamllint.yml
new file mode 100644
index 000000000..e7fc6a6df
--- /dev/null
+++ b/.yamllint.yml
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: CC0-1.0
+# SPDX-FileCopyrightText: 2024 KDE e.V.
+
+extends: default
+
+ignore-from-file:
+  - .gitignore
+  - .yamlignore
+
+rules:
+  # don't require a document start marker
+  document-start: disable
+  indentation:
+    # allow less strict, but still consistent indentation of lists
+    indent-sequences: consistent
+  # allow longer lines; warn about even longer ones
+  line-length:
+    max: 120
+    level: warning