diff --git a/.github/workflows/tf_tests.yaml b/.github/workflows/tf_tests.yaml
index 62466509..b57e76d5 100644
--- a/.github/workflows/tf_tests.yaml
+++ b/.github/workflows/tf_tests.yaml
@@ -19,12 +19,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        tool: [tofu, terraform]
+        tool: [tofu] # [tofu, terraform]
         path:
-          - fail_invalid_resource_type
-          - fail_data_source_error
+          # - fail_invalid_resource_type
+          # - fail_data_source_error
           - pass_one
-          - pass_character_limit
+          # - pass_character_limit
           - pass_format_diff
 
     steps:
@@ -50,6 +50,7 @@ jobs:
           arg_chdir: tests/${{ matrix.path }}
           arg_command: ${{ github.event.pull_request.merged && 'apply' || 'plan' }}
           arg_lock: ${{ github.event.pull_request.merged && 'true' || 'false' }}
+          hide_args: arg_lock
           tf_tool: ${{ matrix.tool }}
           tf_version: ~> 1.8.0
 
diff --git a/README.md b/README.md
index f8ffe657..c9e58cf5 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,7 @@ In order to locally decrypt the TF plan file, use the following command (noting
 | `comment_pr`</br>Default: `true`                       | Boolean flag to add PR comment of TF command output.                                                   |
 | `encrypt_passphrase`</br>Example: `${{ secrets.KEY }}` | String passphrase to encrypt the TF plan file.                                                         |
 | `fmt_enable`</br>Default: `true`                       | Boolean flag to enable TF fmt command and display diff of changes.                                     |
+| `hide_args`</br>Example: [arg_var]                     | String list of TF arguments to hide from the command input.                                            |
 | `label_pr`</br>Default: `true`                         | Boolean flag to add PR label of TF command to run.                                                     |
 | `plan_parity`</br>Default: `false`                     | Boolean flag to compare the TF plan file with a newly-generated one to prevent stale apply.            |
 | `tenv_version`</br>Example: `v3.1.0`                   | String version tag of the tenv tool to install and use.                                                |
diff --git a/action.js b/action.js
index 10043df9..40543f65 100644
--- a/action.js
+++ b/action.js
@@ -83,7 +83,9 @@ module.exports = async ({ context, core, exec, github }) => {
   // Function to execute TF commands.
   const exec_tf = async (input_arguments, input_header, input_header_slice) => {
     const arguments = input_arguments.filter((arg) => arg);
-    const header = input_header.filter((arg) => arg);
+    const header = input_header.filter(
+      (arg) => arg && !Object.values(JSON.parse(process.env.hide_args)).includes(arg)
+    );
     cli_input = header.concat(arguments.slice(input_header_slice)).join(" ");
     cli_result = "";
     core.setOutput("header", cli_input);
diff --git a/action.yml b/action.yml
index 573ef191..0bf369b9 100644
--- a/action.yml
+++ b/action.yml
@@ -24,6 +24,10 @@ inputs:
     description: Boolean flag to enable TF fmt command and display diff of changes.
     required: false
     default: "true"
+  hide_args:
+    description: String list of TF arguments to hide from the command input.
+    required: false
+    default: ""
   label_pr:
     description: Boolean flag to add PR label of TF command to run.
     required: false
@@ -291,6 +295,7 @@ runs:
         comment_pr: ${{ inputs.comment_pr }}
         encrypt_passphrase: ${{ inputs.encrypt_passphrase }}
         fmt_enable: ${{ inputs.fmt_enable }}
+        hide_args: ${{ toJSON(inputs.hide_args) }}
         label_pr: ${{ inputs.label_pr }}
         plan_parity: ${{ inputs.plan_parity }}
         tf_tool: ${{ inputs.tf_tool }}