diff --git a/instrumentation/aws_lambda/CHANGELOG.md b/instrumentation/aws_lambda/CHANGELOG.md
index 466d72fb6e..9da1d49c69 100644
--- a/instrumentation/aws_lambda/CHANGELOG.md
+++ b/instrumentation/aws_lambda/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release History: opentelemetry-instrumentation-aws_lambda
 
+### v0.4.0 / 2025-09-17
+
+* BREAKING CHANGE: Check if span has the attributes method to avoid internal error
+
+* FIXED: Check if span has the attributes method to avoid internal error
+
 ### v0.3.0 / 2025-02-04
 
 * ADDED: AWS Lambda programmatic wrap
diff --git a/instrumentation/aws_lambda/lib/opentelemetry/instrumentation/aws_lambda/version.rb b/instrumentation/aws_lambda/lib/opentelemetry/instrumentation/aws_lambda/version.rb
index f8a9ac1a76..4eca5a0a00 100644
--- a/instrumentation/aws_lambda/lib/opentelemetry/instrumentation/aws_lambda/version.rb
+++ b/instrumentation/aws_lambda/lib/opentelemetry/instrumentation/aws_lambda/version.rb
@@ -7,7 +7,7 @@
 module OpenTelemetry
   module Instrumentation
     module AwsLambda
-      VERSION = '0.3.0'
+      VERSION = '0.4.0'
     end
   end
 end