diff --git a/README.md b/README.md
index 8dc29ff..f4edd4e 100644
--- a/README.md
+++ b/README.md
@@ -118,6 +118,7 @@ GitHub Actions offers managed [virtual environments](https://help.github.com/en/
 | GitHub Runner  | Docker Image                                                      |
 | -------------- | ----------------------------------------------------------------- |
 | ubuntu-latest  | [node:12.6-buster-slim](https://hub.docker.com/_/buildpack-deps)  |
+| ubuntu-20.04   | [node:12.6-buster-slim](https://hub.docker.com/_/buildpack-deps)  |
 | ubuntu-18.04   | [node:12.6-buster-slim](https://hub.docker.com/_/buildpack-deps)  |
 | ubuntu-16.04   | [node:12.6-stretch-slim](https://hub.docker.com/_/buildpack-deps) |
 | windows-latest | `unsupported`                                                     |
diff --git a/cmd/platforms.go b/cmd/platforms.go
index b79e8ed..4be7896 100644
--- a/cmd/platforms.go
+++ b/cmd/platforms.go
@@ -7,6 +7,7 @@ import (
 func (i *Input) newPlatforms() map[string]string {
 	platforms := map[string]string{
 		"ubuntu-latest":  "node:12.6-buster-slim",
+		"ubuntu-20.04":   "node:12.6-buster-slim",
 		"ubuntu-18.04":   "node:12.6-buster-slim",
 		"ubuntu-16.04":   "node:12.6-stretch-slim",
 		"windows-latest": "",