diff --git a/README.md b/README.md
index 4b3ec20..ec711aa 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,9 @@ passed to the action using `with`, as demonstrated with `files` in the above exa
 
 | Property | Default | Description |
 | --- | --- | --- |
-| files | -  | *Required* which files to test |
+| files | - | *Required* which files to test |
 | policy | policy | Where to find the policy folder or files |
+| namespace | main | The Rego namespace to use for testing |
 | output | stdout | How to format the output from Conftest (stdout, json or tap) |
+| args | - | Any additional arguments to pass to Conftest |
 
diff --git a/action.yml b/action.yml
index 62b8c38..3b00d14 100644
--- a/action.yml
+++ b/action.yml
@@ -11,17 +11,24 @@ inputs:
   policy:
     description: "Where to find the policy folder or file"
     default: "policy"
+  namespace:
+    description: "The Rego namespace to use for testing"
+    default: "main"
   output:
     description: "Output format for results"
     default: "stdout"
+  args:
+    description: "Any additional arguments to pass to Conftest"
 runs:
   using: 'docker'
   image: 'docker://instrumenta/conftest:latest'
   args:
   - test
-  - ${{ inputs.files }} 
   - -o
   - ${{ inputs.output }}
   - -p
   - ${{ inputs.policy }}
-
+  - --namespace
+  - ${{ inputs.namespace }}
+  - ${{ inputs.args }}
+  - ${{ inputs.files }}