diff --git a/.github/dependabot.yml b/.github/dependabot.yaml
similarity index 100%
rename from .github/dependabot.yml
rename to .github/dependabot.yaml
diff --git a/.github/workflows/cmake-checks.yml b/.github/workflows/cmake-checks.yaml
similarity index 90%
rename from .github/workflows/cmake-checks.yml
rename to .github/workflows/cmake-checks.yaml
index cb2701917..62e87d33b 100644
--- a/.github/workflows/cmake-checks.yml
+++ b/.github/workflows/cmake-checks.yaml
@@ -9,7 +9,7 @@ name: CMake checks
 on:
   pull_request:
     paths:
-      - '.github/workflows/cmake-checks.yml'
+      - '.github/workflows/cmake-checks.yaml'
       - 'CMakeLists.txt'
       - '**/CMakeLists.txt'
       - '**.cmake'
@@ -18,7 +18,7 @@ on:
     branches:
       - main
     paths:
-      - '.github/workflows/cmake-checks.yml'
+      - '.github/workflows/cmake-checks.yaml'
       - 'CMakeLists.txt'
       - '**/CMakeLists.txt'
       - '**.cmake'
diff --git a/.github/workflows/early_integration.yml b/.github/workflows/early_integration.yaml
similarity index 100%
rename from .github/workflows/early_integration.yml
rename to .github/workflows/early_integration.yaml
diff --git a/.github/workflows/general-checks.yml b/.github/workflows/general-checks.yaml
similarity index 100%
rename from .github/workflows/general-checks.yml
rename to .github/workflows/general-checks.yaml
diff --git a/.github/workflows/gyselalibxx.yml b/.github/workflows/gyselalibxx.yaml
similarity index 100%
rename from .github/workflows/gyselalibxx.yml
rename to .github/workflows/gyselalibxx.yaml
diff --git a/.github/workflows/markdown-checks.yml b/.github/workflows/markdown-checks.yaml
similarity index 83%
rename from .github/workflows/markdown-checks.yml
rename to .github/workflows/markdown-checks.yaml
index a3a593050..6f64ec38c 100644
--- a/.github/workflows/markdown-checks.yml
+++ b/.github/workflows/markdown-checks.yaml
@@ -9,13 +9,13 @@ name: Markdown checks
 on:
   pull_request:
     paths:
-      - '.github/workflows/markdown-checks.yml'
+      - '.github/workflows/markdown-checks.yaml'
       - '**.md'
   push:
     branches:
       - main
     paths:
-      - '.github/workflows/markdown-checks.yml'
+      - '.github/workflows/markdown-checks.yaml'
       - '**.md'
   workflow_dispatch:
 
diff --git a/.github/workflows/packages-cleanup.yml b/.github/workflows/packages-cleanup.yaml
similarity index 100%
rename from .github/workflows/packages-cleanup.yml
rename to .github/workflows/packages-cleanup.yaml
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yaml
similarity index 100%
rename from .github/workflows/pages.yml
rename to .github/workflows/pages.yaml
diff --git a/.github/workflows/python-checks.yml b/.github/workflows/python-checks.yaml
similarity index 91%
rename from .github/workflows/python-checks.yml
rename to .github/workflows/python-checks.yaml
index 19be1a846..42a586ada 100644
--- a/.github/workflows/python-checks.yml
+++ b/.github/workflows/python-checks.yaml
@@ -9,14 +9,14 @@ name: Python checks
 on:
   pull_request:
     paths:
-      - '.github/workflows/python-checks.yml'
+      - '.github/workflows/python-checks.yaml'
       - '**.py'
       - 'bin/trailing_spaces'
   push:
     branches:
       - main
     paths:
-      - '.github/workflows/python-checks.yml'
+      - '.github/workflows/python-checks.yaml'
       - '**.py'
       - 'bin/trailing_spaces'
   workflow_dispatch:
diff --git a/.github/workflows/shell-checks.yml b/.github/workflows/shell-checks.yaml
similarity index 93%
rename from .github/workflows/shell-checks.yml
rename to .github/workflows/shell-checks.yaml
index c90dcb2fd..4309fe1d7 100644
--- a/.github/workflows/shell-checks.yml
+++ b/.github/workflows/shell-checks.yaml
@@ -9,7 +9,7 @@ name: Shell checks
 on:
   pull_request:
     paths:
-      - '.github/workflows/shell-checks.yml'
+      - '.github/workflows/shell-checks.yaml'
       - '**.sh'
       - 'bin/applyreuse'
       - 'docker/*/bash_run'
diff --git a/.github/workflows/tests-macos.yml b/.github/workflows/tests-macos.yaml
similarity index 98%
rename from .github/workflows/tests-macos.yml
rename to .github/workflows/tests-macos.yaml
index fc19917f7..9da024cb3 100644
--- a/.github/workflows/tests-macos.yml
+++ b/.github/workflows/tests-macos.yaml
@@ -9,7 +9,7 @@ name: Tests on macOS
 on:
   pull_request:
     paths:
-      - '.github/workflows/tests-macos.yml'
+      - '.github/workflows/tests-macos.yaml'
       - '**.cpp'
       - '**.hpp'
       - '**.hpp.in'
@@ -23,7 +23,7 @@ on:
     branches:
       - main
     paths:
-      - '.github/workflows/tests-macos.yml'
+      - '.github/workflows/tests-macos.yaml'
       - '**.cpp'
       - '**.hpp'
       - '**.hpp.in'
diff --git a/.github/workflows/tests-ubuntu.yml b/.github/workflows/tests-ubuntu.yaml
similarity index 99%
rename from .github/workflows/tests-ubuntu.yml
rename to .github/workflows/tests-ubuntu.yaml
index 9f66946a7..71707c415 100644
--- a/.github/workflows/tests-ubuntu.yml
+++ b/.github/workflows/tests-ubuntu.yaml
@@ -9,7 +9,7 @@ name: Tests on Ubuntu
 on:
   pull_request:
     paths:
-      - '.github/workflows/tests-ubuntu.yml'
+      - '.github/workflows/tests-ubuntu.yaml'
       - '**.cpp'
       - '**.hpp'
       - '**.hpp.in'
@@ -23,7 +23,7 @@ on:
     branches:
       - main
     paths:
-      - '.github/workflows/tests-ubuntu.yml'
+      - '.github/workflows/tests-ubuntu.yaml'
       - '**.cpp'
       - '**.hpp'
       - '**.hpp.in'
diff --git a/.github/workflows/website-checks.yml b/.github/workflows/website-checks.yaml
similarity index 100%
rename from .github/workflows/website-checks.yml
rename to .github/workflows/website-checks.yaml
diff --git a/.github/workflows/yaml-checks.yml b/.github/workflows/yaml-checks.yaml
similarity index 89%
rename from .github/workflows/yaml-checks.yml
rename to .github/workflows/yaml-checks.yaml
index 317ab438d..d0e14e9dd 100644
--- a/.github/workflows/yaml-checks.yml
+++ b/.github/workflows/yaml-checks.yaml
@@ -12,7 +12,7 @@ on:
       - '.clang-format'
       - '.clang-tidy'
       - '.gersemirc'
-      - '.github/workflows/yaml-checks.yml'
+      - '.github/workflows/yaml-checks.yaml'
       - '**.yaml'
       - '**.yml'
   push:
@@ -22,7 +22,7 @@ on:
       - '.clang-format'
       - '.clang-tidy'
       - '.gersemirc'
-      - '.github/workflows/yaml-checks.yml'
+      - '.github/workflows/yaml-checks.yaml'
       - '**.yaml'
       - '**.yml'
   workflow_dispatch:
diff --git a/.yamllint.yml b/.yamllint.yaml
similarity index 100%
rename from .yamllint.yml
rename to .yamllint.yaml