diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8a56d27..3a308f4 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -54,4 +54,14 @@ repos:
   - id: python-no-log-warn
   - id: rst-backticks
 
+- repo: https://github.com/adrienverge/yamllint.git
+  rev: v1.37.1
+  hooks:
+  - id: yamllint
+    types:
+    - file
+    - yaml
+    args:
+    - --strict
+
 ...
diff --git a/.yamllint b/.yamllint
new file mode 100644
index 0000000..3dde2ea
--- /dev/null
+++ b/.yamllint
@@ -0,0 +1,20 @@
+---
+
+extends: default
+
+rules:
+  indentation:
+    level: error
+    indent-sequences: false
+  quoted-strings:
+    required: only-when-needed
+  truthy:
+    allowed-values:
+    - >-
+      false
+    - >-
+      true
+    - >-  # Allow "on" key name in GHA CI/CD workflow definitions
+      on
+
+...