diff --git a/terraform/python/ec2/adot-genai/main.tf b/terraform/python/ec2/adot-genai/main.tf
index 85f6e1e6e..0e6545e1e 100644
--- a/terraform/python/ec2/adot-genai/main.tf
+++ b/terraform/python/ec2/adot-genai/main.tf
@@ -84,7 +84,9 @@ unzip genai-service.zip
 python3.12 -m pip install fastapi uvicorn[standard] --no-cache-dir
 python3.12 -m pip install boto3 botocore setuptools --no-cache-dir
 python3.12 -m pip install opentelemetry-api opentelemetry-sdk opentelemetry-semantic-conventions --no-cache-dir
-python3.12 -m pip install langchain langchain-community langchain_aws --no-cache-dir
+
+# Temporarily hardcode langchain to 0.3.27, as we suspect later versions break the canary tests for gen-ai
+python3.12 -m pip install langchain==0.3.27 langchain-community langchain_aws --no-cache-dir
 python3.12 -m pip install python-dotenv openlit --no-cache-dir
 python3.12 -m pip install openinference-instrumentation-langchain --no-cache-dir
 ${var.get_adot_wheel_command}