diff --git a/Gemfile.lock b/Gemfile.lock
index 7b02d87..4877bf1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    proformaxml (1.5.0)
+    proformaxml (1.5.1)
       activemodel (>= 5.2.3, < 8.0.0)
       activesupport (>= 5.2.3, < 8.0.0)
       dachsfisch (~> 1.0.0)
diff --git a/lib/proformaxml/version.rb b/lib/proformaxml/version.rb
index 5f82cbf..0594d7b 100644
--- a/lib/proformaxml/version.rb
+++ b/lib/proformaxml/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module ProformaXML
-  VERSION = '1.5.0'
+  VERSION = '1.5.1'
 end