diff --git a/README.md b/README.md
index 46ca292..d80f9e7 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ that [provides a LXC container](https://forgejo.org/docs/next/user/actions/#jobs
 | user | Administrator user name | `false` | root |
 | password | Administrator password | `false` | admin1234 |
 | runner | Runner repository | `false` | https://code.forgejo.org/forgejo/runner |
-| runner-version | Runner version. If it starts with @ (for instance @featurebranch), the runner will be built from source using the specified branch. | `false` | v3.5.1 |
+| runner-version | Runner version. If it starts with @ (for instance @featurebranch), the runner will be built from source using the specified branch. | `false` | v5.0.3 |
 | container | Name of the container running the Forgejo instance | `false` | forgejo |
 | lxc-ip-prefix | Class C IP prefix used by LXC | `false` | 10.0.23 |
 | install-only | Only install Forgejo and the Forgejo runner, do not launch them | `false` | false |
diff --git a/RUNNER_VERSION b/RUNNER_VERSION
index d2613df..5f81b6a 100644
--- a/RUNNER_VERSION
+++ b/RUNNER_VERSION
@@ -1 +1 @@
-v3.5.1
+v5.0.3
diff --git a/action.yml b/action.yml
index 0eeb324..e27906e 100644
--- a/action.yml
+++ b/action.yml
@@ -54,7 +54,7 @@ inputs:
     default: 'https://code.forgejo.org/forgejo/runner'
   runner-version:
     description: 'Runner version. If it starts with @ (for instance @featurebranch), the runner will be built from source using the specified branch.'
-    default: 'v3.5.1'
+    default: 'v5.0.3'
   container:
     description: 'Name of the container running the Forgejo instance'
     default: 'forgejo'