diff --git a/README.md b/README.md
index 9e131d46..06819f47 100644
--- a/README.md
+++ b/README.md
@@ -367,7 +367,7 @@ Run the workflow locally with `act` using [`shivammathur/node`](https://github.c
 act -P ubuntu-latest=shivammathur/node:latest
 
 # For runs-on: ubuntu-18.04
-act -P ubuntu-18.04=shivammathur/node:latest
+act -P ubuntu-18.04=shivammathur/node:bionic
 
 # For runs-on: ubuntu-16.04
 act -P ubuntu-16.04=shivammathur/node:xenial