diff --git a/CHANGELOG.md b/CHANGELOG.md
index 673bc29..a31149a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# ActiveAttr 0.15.3 (April 12, 2021)
+
+* #185 Fixed ReDoS vulnerability in BooleanTypecaster#call (ねず)
+
 # ActiveAttr 0.15.2 (February 17, 2021)
 
 * ActiveAttr now supports Ruby 3.0
diff --git a/lib/active_attr/version.rb b/lib/active_attr/version.rb
index e540bf8..5d0db8b 100644
--- a/lib/active_attr/version.rb
+++ b/lib/active_attr/version.rb
@@ -1,5 +1,5 @@
 module ActiveAttr
   # Complete version string
   # @since 0.1.0
-  VERSION = "0.15.2"
+  VERSION = "0.15.3"
 end