diff --git a/hooks/pre-commit b/hooks/pre-commit
index 368c135ed..0fbd577c1 100755
--- a/hooks/pre-commit
+++ b/hooks/pre-commit
@@ -78,7 +78,7 @@ class Bumper
 end
 
 bumper = Bumper.new([
-	Source.new('mustache.mjs', /version: '([\d\.]*)'/),
-	Source.new('mustache.js.nuspec', /<version>([\d\.]*)<\/version>/),
+	Source.new('mustache.mjs', /version: '([^']+)'/),
+	Source.new('mustache.js.nuspec', /<version>([^<]+)<\/version>/),
 ])
 bumper.start