diff --git a/lib/psych/versions.rb b/lib/psych/versions.rb
index 16aeff5c..709b0afd 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 = '5.2.0.beta3'
+  VERSION = '5.2.0.beta4'
 
   if RUBY_ENGINE == 'jruby'
     DEFAULT_SNAKEYAML_VERSION = '2.7'.freeze