diff --git a/action.yml b/action.yml
index f498457..7ea5868 100644
--- a/action.yml
+++ b/action.yml
@@ -9,10 +9,14 @@ inputs:
   all:
     description: "Whether to install every Nextflow release via the '-all' distribution."
     required: false
-    default: false
+    default: "false"
 runs:
-  using: "node20"
-  main: "dist/index.js"
+  using: "composite"
+  steps:
+    - uses: ./subaction
+      with:
+        version: ${{ inputs.version }}
+        all: ${{ inputs.all }}
 branding:
   icon: "shuffle"
   color: "green"
diff --git a/subaction/action.yml b/subaction/action.yml
new file mode 100644
index 0000000..334bea8
--- /dev/null
+++ b/subaction/action.yml
@@ -0,0 +1,18 @@
+name: "Setup Nextflow"
+description: "Install Nextflow and add it to the PATH"
+author: "nf-core"
+inputs:
+  version:
+    description: "The Nextflow version to download (if necessary) and use. Example: 21.10.3"
+    required: false
+    default: "latest-stable"
+  all:
+    description: "Whether to install every Nextflow release via the '-all' distribution."
+    required: false
+    default: false
+runs:
+  using: "node20"
+  main: "../dist/index.js"
+branding:
+  icon: "shuffle"
+  color: "green"