diff --git a/CHANGELOG.rdoc b/CHANGELOG.rdoc
index 6276247..58062e4 100644
--- a/CHANGELOG.rdoc
+++ b/CHANGELOG.rdoc
@@ -1,5 +1,8 @@
 = Changelog
 
+== 1.24.1
+* Fixed support for text/calendar attachments by using content_type instead of mime_type.
+
 == 1.24.0
 * Added configurable warnings when referencing deprecated classes.
 
diff --git a/VERSION b/VERSION
index 53cc1a6..f9e8384 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.24.0
+1.24.1
diff --git a/lib/postmark/version.rb b/lib/postmark/version.rb
index 23b002a..868a323 100644
--- a/lib/postmark/version.rb
+++ b/lib/postmark/version.rb
@@ -1,3 +1,3 @@
 module Postmark
-  VERSION = '1.24.0'
+  VERSION = '1.24.1'
 end