diff --git a/action.yml b/action.yml
index 24faf50..65bce68 100644
--- a/action.yml
+++ b/action.yml
@@ -1,13 +1,13 @@
 name: Install nim
 description: Install the given nim version
 
-#inputs:
-#  nimVersion:
-#    description: a nim version string like 2.2.2 or 2.0.8
-#    required: false
-#  os:
-#    description: a os string like "linux" "windows"
-#    required: false
+inputs:
+  nimVersion:
+    description: a nim version string like 2.2.2 or 2.0.8
+    required: false
+  os:
+    description: a os string like "linux" "windows"
+    required: false
 
 runs:
   using: 'composite'