diff --git a/lib/psych/versions.rb b/lib/psych/versions.rb
index 840deadf..f62d8443 100644
--- a/lib/psych/versions.rb
+++ b/lib/psych/versions.rb
@@ -2,7 +2,7 @@
 
 module Psych
   # The version of Psych you are using
-  VERSION = '5.1.0'
+  VERSION = '5.1.1'
 
   if RUBY_ENGINE == 'jruby'
     DEFAULT_SNAKEYAML_VERSION = '2.7'.freeze