diff --git a/CHANGELOG.md b/CHANGELOG.md
index 364aa7b4..46f289f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ If your change does not need a CHANGELOG entry, add the "skip changelog" label t
 
 ## Unreleased
 
+- Add cloud.platform attribute to resource attributes in lambda ([#308](https://github.com/aws-observability/aws-otel-js-instrumentation/pull/308))
+  
 ## v0.8.0 - 2025-10-08
 
 ### Enhancements
diff --git a/lambda-layer/packages/layer/scripts/otel-instrument b/lambda-layer/packages/layer/scripts/otel-instrument
index 94ac4b0b..52bc58cd 100644
--- a/lambda-layer/packages/layer/scripts/otel-instrument
+++ b/lambda-layer/packages/layer/scripts/otel-instrument
@@ -35,7 +35,7 @@ else
   export NODE_OPTIONS="${NODE_OPTIONS} --require /opt/wrapper.js"
 fi
 
-export LAMBDA_RESOURCE_ATTRIBUTES="cloud.region=$AWS_REGION,cloud.provider=aws,faas.name=$AWS_LAMBDA_FUNCTION_NAME,faas.version=$AWS_LAMBDA_FUNCTION_VERSION,faas.instance=$AWS_LAMBDA_LOG_STREAM_NAME,aws.log.group.names=$AWS_LAMBDA_LOG_GROUP_NAME";
+export LAMBDA_RESOURCE_ATTRIBUTES="cloud.region=$AWS_REGION,cloud.platform=aws_lambda,cloud.provider=aws,faas.name=$AWS_LAMBDA_FUNCTION_NAME,faas.version=$AWS_LAMBDA_FUNCTION_VERSION,faas.instance=$AWS_LAMBDA_LOG_STREAM_NAME,aws.log.group.names=$AWS_LAMBDA_LOG_GROUP_NAME";
 
 
 # - If OTEL_EXPORTER_OTLP_PROTOCOL is not set by user, the default exporting protocol is http/protobuf.