diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index 178e545..b51519b 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -1,12 +1,16 @@
 name: CI/CD
 on:
+  # only on PRs into and merge to default branch
+  pull_request:
+    branches:
+      - master
   push:
+    branches:
+      - master
 
 jobs:
-  # runs on branch pushes only
   ci_unit:
     name: Run Unit Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -26,7 +30,6 @@ jobs:
 
   ci_integration:
     name: Run Integration Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -137,7 +140,6 @@ jobs:
 
   ci_integration_envvar:
     name: Run Integration Env Var Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -159,7 +161,6 @@ jobs:
 
   ci_integration_large_output:
     name: Run Integration Large Output Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -191,7 +192,6 @@ jobs:
 
   ci_integration_retry_on_exit_code:
     name: Run Integration retry_on_exit_code Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -240,7 +240,6 @@ jobs:
 
   ci_integration_continue_on_error:
     name: Run Integration continue_on_error Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -288,7 +287,6 @@ jobs:
 
   ci_integration_retry_wait_seconds:
     name: Run Integration Tests (retry_wait_seconds)
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -325,7 +323,6 @@ jobs:
 
   ci_integration_on_retry_cmd:
     name: Run Integration Tests (on_retry_command)
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -369,7 +366,6 @@ jobs:
   # timeout tests take longer to run so run in parallel
   ci_integration_timeout_seconds:
     name: Run Integration Timeout Tests (seconds)
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -400,7 +396,6 @@ jobs:
 
   ci_integration_timeout_retry_on_timeout:
     name: Run Integration Timeout Tests (retry_on timeout)
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -432,7 +427,6 @@ jobs:
 
   ci_integration_timeout_retry_on_error:
     name: Run Integration Timeout Tests (retry_on error)
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -468,7 +462,6 @@ jobs:
 
   ci_integration_timeout_minutes:
     name: Run Integration Timeout Tests (minutes)
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -499,7 +492,6 @@ jobs:
 
   ci_windows:
     name: Run Windows Tests
-    if: startsWith(github.ref, 'refs/heads')
     runs-on: windows-latest
     steps:
       - name: Checkout
@@ -571,7 +563,7 @@ jobs:
     steps:
       - run: echo "If this is hit, all tests successfully passed"
 
-  # runs on push to master only
+  # runs on merge to default only
   cd:
     name: Publish Action
     needs: [ci_all_tests_passed]
@@ -588,7 +580,7 @@ jobs:
         run: npm ci
       - name: Release
         id: semantic
-        uses: cycjimmy/semantic-release-action@v2
+        uses: cycjimmy/semantic-release-action@v4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Tag
diff --git a/dist/index.js b/dist/index.js
index 281513e..66cb32d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -974,7 +974,8 @@ function getExecutable(inputs) {
         return OS === 'win32' ? 'powershell' : 'bash';
     }
     var executable;
-    switch (inputs.shell) {
+    var shellName = inputs.shell.split(' ')[0];
+    switch (shellName) {
         case 'bash':
         case 'python':
         case 'pwsh': {
@@ -983,7 +984,7 @@ function getExecutable(inputs) {
         }
         case 'sh': {
             if (OS === 'win32') {
-                throw new Error("Shell ".concat(inputs.shell, " not allowed on OS ").concat(OS));
+                throw new Error("Shell ".concat(shellName, " not allowed on OS ").concat(OS));
             }
             executable = inputs.shell;
             break;
@@ -991,13 +992,13 @@ function getExecutable(inputs) {
         case 'cmd':
         case 'powershell': {
             if (OS !== 'win32') {
-                throw new Error("Shell ".concat(inputs.shell, " not allowed on OS ").concat(OS));
+                throw new Error("Shell ".concat(shellName, " not allowed on OS ").concat(OS));
             }
-            executable = inputs.shell + '.exe';
+            executable = shellName + '.exe' + inputs.shell.replace(shellName, '');
             break;
         }
         default: {
-            throw new Error("Shell ".concat(inputs.shell, " not supported.  See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell for supported shells"));
+            throw new Error("Shell ".concat(shellName, " not supported.  See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell for supported shells"));
         }
     }
     return executable;
diff --git a/src/index.ts b/src/index.ts
index 6568ec0..18db604 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -27,7 +27,9 @@ function getExecutable(inputs: Inputs): string {
   }
 
   let executable: string;
-  switch (inputs.shell) {
+  const shellName = inputs.shell.split(' ')[0];
+
+  switch (shellName) {
     case 'bash':
     case 'python':
     case 'pwsh': {
@@ -36,7 +38,7 @@ function getExecutable(inputs: Inputs): string {
     }
     case 'sh': {
       if (OS === 'win32') {
-        throw new Error(`Shell ${inputs.shell} not allowed on OS ${OS}`);
+        throw new Error(`Shell ${shellName} not allowed on OS ${OS}`);
       }
       executable = inputs.shell;
       break;
@@ -44,14 +46,14 @@ function getExecutable(inputs: Inputs): string {
     case 'cmd':
     case 'powershell': {
       if (OS !== 'win32') {
-        throw new Error(`Shell ${inputs.shell} not allowed on OS ${OS}`);
+        throw new Error(`Shell ${shellName} not allowed on OS ${OS}`);
       }
-      executable = inputs.shell + '.exe';
+      executable = shellName + '.exe' + inputs.shell.replace(shellName, '');
       break;
     }
     default: {
       throw new Error(
-        `Shell ${inputs.shell} not supported.  See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell for supported shells`
+        `Shell ${shellName} not supported.  See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell for supported shells`
       );
     }
   }