diff --git a/lib/cached_resource/version.rb b/lib/cached_resource/version.rb
index c4d22b3..817d4f8 100644
--- a/lib/cached_resource/version.rb
+++ b/lib/cached_resource/version.rb
@@ -1,3 +1,3 @@
 module CachedResource
-  VERSION = "9.0.0"
+  VERSION = '9.0.0'
 end