diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a414425..f2ccee5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-      
+
     - run: echo "Build some tool and generate some (versioned) artifacts" > artifact-$(date -u +"%Y-%m-%dT%H-%M-%SZ").txt
 
     - name: Single
@@ -36,7 +36,8 @@ jobs:
           artifact-*.txt
           README.md
 
-    - run: |
+    - name: Add artifacts/artifact.txt
+      run: |
         mkdir artifacts
         echo "Build some tool and generate some artifacts" > artifacts/artifact.txt
 
@@ -46,7 +47,8 @@ jobs:
         token: ${{ secrets.GITHUB_TOKEN }}
         files: artifacts/artifact.txt
 
-    - run: |
+    - name: Add artifacts/*.md
+      run: |
         echo "tip hello" > artifacts/hello.md
         echo "tip world" > artifacts/world.md
 
@@ -55,3 +57,14 @@ jobs:
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         files: artifacts/*
+
+    - name: Add artifacts/subdir
+      run: |
+        mkdir artifacts/subdir
+        echo "Test recursive glob" > artifacts/subdir/deep_file.txt
+
+    - name: Directory wildcard (recursive)
+      uses: ./
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        files: artifacts/**
diff --git a/tip.py b/tip.py
index d792172..4f1324a 100755
--- a/tip.py
+++ b/tip.py
@@ -25,7 +25,7 @@ if len(args) == 0:
     raise(Exception("Glob patterns need to be provided as positional arguments or through envvar 'INPUT_FILES'!"))
 
 for item in args:
-    items = glob(item)
+    items = [fname for fname in glob(item, recursive=True) if not Path(fname).is_dir()]
     print("glob(%s)" % item, "->", items)
     files = files + items