diff --git a/.yamllint b/.yamllint
index 69b5da2..6e46742 100644
--- a/.yamllint
+++ b/.yamllint
@@ -5,26 +5,30 @@ rules:
   line-length:
     max: 160
     level: warning
-  
+
   comments:
     min-spaces-from-content: 1
-  
+
   indentation:
     spaces: 2
     indent-sequences: true
-  
+
   truthy:
-    allowed-values: ['true', 'false', 'yes', 'no']
+    allowed-values: ['true', 'false']
     check-keys: false
-  
+
   braces:
     max-spaces-inside: 1
-  
+
   brackets:
     max-spaces-inside: 1
-  
+
   comments-indentation: disable
 
+  octal-values:
+    forbid-implicit-octal: true
+    forbid-explicit-octal: true
+
 ignore: |
   .gitignore
   changelogs/