diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 368f642..699709b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -161,6 +161,24 @@ jobs:
             exit 1
           fi
 
+      - name: "Use 0.13.5 (no v)"
+        id: use-0-13-5
+        uses: ./
+        with:
+          version: 0.13.5
+          verb: core
+          args: version
+      - name: "Use 0.13.5 (check)"
+        run: |
+          target='${{ steps.use-0-13-5.outputs.output }}'
+          if [[ "$target" =~ v0\.13\.5 ]]; then
+            echo "matches"
+            exit 0
+          else
+            echo "does not match"
+            exit 1
+          fi
+
       - name: "Use commit"
         id: use-commit
         uses: ./
diff --git a/action.yml b/action.yml
index 2e9335f..e8b25f6 100644
--- a/action.yml
+++ b/action.yml
@@ -80,6 +80,9 @@ runs:
         VERSION=${{ inputs.version }}
         if [[ "$VERSION" == "latest" ]]; then
           VERSION=
+        elif [[ -n "$VERSION" && "$VERSION" != v* ]]; then
+          # Add 'v' prefix if version doesn't start with 'v' and is not empty
+          VERSION="v$VERSION"
         fi
         latest=$(curl https://dl.dagger.io/dagger/versions/latest)