diff --git a/openwhisk-python-scheduled-cron/serverless.yml b/openwhisk-python-scheduled-cron/serverless.yml
index 02da2d601..2e7091307 100644
--- a/openwhisk-python-scheduled-cron/serverless.yml
+++ b/openwhisk-python-scheduled-cron/serverless.yml
@@ -2,7 +2,7 @@ service: python_service
 
 provider:
   name: openwhisk
-  runtime: python
+  runtime: python:3
 
 functions:
   cron:
diff --git a/openwhisk-python-simple-http-endpoint/serverless.yml b/openwhisk-python-simple-http-endpoint/serverless.yml
index 186fc764b..f40ca2334 100644
--- a/openwhisk-python-simple-http-endpoint/serverless.yml
+++ b/openwhisk-python-simple-http-endpoint/serverless.yml
@@ -2,7 +2,7 @@ service: python-service
 
 provider:
   name: openwhisk
-  runtime: python
+  runtime: python:3
 
 functions:
   currentTime: