diff --git a/actions/deploy-lambda-function/upload-lambda.bats b/actions/deploy-lambda-function/upload-lambda.bats
index 090fe2ce..f4a89c9b 100644
--- a/actions/deploy-lambda-function/upload-lambda.bats
+++ b/actions/deploy-lambda-function/upload-lambda.bats
@@ -75,3 +75,13 @@ function aws() {
   [ -f "$GITHUB_OUTPUT" ]
   [ "$(< "$GITHUB_OUTPUT")" = "s3-key=/$S3_KEY" ]
 }
+
+@test "it should expand wildcards" {
+  S3_KEY=artifact.zip
+
+  run upload-lambda "$BATS_TEST_TMPDIR/*.zip" "$S3_BUCKET" "$S3_KEY"
+
+  [ "$status" -eq 0 ]
+  [ -f "$AWS_CMD_FILE" ]
+  [ "$(< "$AWS_CMD_FILE")" = "s3 cp $ZIP_FILE s3://$S3_BUCKET/$S3_KEY" ]
+}
diff --git a/actions/deploy-lambda-function/upload-lambda.sh b/actions/deploy-lambda-function/upload-lambda.sh
index bf1d0ee9..60b8b112 100755
--- a/actions/deploy-lambda-function/upload-lambda.sh
+++ b/actions/deploy-lambda-function/upload-lambda.sh
@@ -8,10 +8,19 @@ function upload-lambda() {
     echo "[ERROR] Zip file is required" >&2
     return 1
   }
+  # resolve zip file if wildcard
+  [ "$zip_file" = "${zip_file#*\*}" ] || {
+    echo "[DEBUG] Found a wildcard file" >&2
+    local pre_wildcard="${zip_file%\**}"
+    local post_wildcard="${zip_file#*\*}"
+    zip_file="$(builtin echo "$pre_wildcard"*"$post_wildcard")"
+    echo "[DEBUG] Expanded '$pre_wildcard*$post_wildcard' to $zip_file" >&2
+  }
   [ -f "$zip_file" ] || {
     echo "[ERROR] Cannot find zip file: $zip_file" >&2
     return 2
   }
+
   local s3_bucket="${2:-}"
   [ -n "$s3_bucket" ] || {
     echo "[ERROR] S3 bucket is required" >&2