diff --git a/action.yml b/action.yml
index 0c527c2..c1047e8 100644
--- a/action.yml
+++ b/action.yml
@@ -56,7 +56,7 @@ inputs:
     description: |-
       If true, the action will securely generate a credentials file which can be
       used for authentication via gcloud and Google Cloud SDKs.
-    default: true
+    default: 'true'
     required: false
   export_environment_variables:
     description: |-
@@ -79,7 +79,7 @@ inputs:
       If false, the action will not export any environment variables, meaning
       future steps are unlikely to be automatically authenticated to Google
       Cloud.
-    default: true
+    default: 'true'
     required: false
   token_format:
     description: |-
@@ -113,7 +113,7 @@ inputs:
       If true, the action will remove any created credentials from the
       filesystem upon completion. This only applies if "create_credentials_file"
       is true.
-    default: true
+    default: 'true'
     required: false
 
   # access token params
@@ -175,7 +175,7 @@ inputs:
       generated token. If true, the token will contain "email" and
       "email_verified" claims. This is only valid when "token_format" is
       "id_token".
-    default: false
+    default: 'false'
     required: false
 
 outputs:
diff --git a/src/main.ts b/src/main.ts
index 5e84980..54822ea 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -16,7 +16,6 @@ import { join as pathjoin } from 'path';
 
 import {
   exportVariable,
-  getBooleanInput,
   getIDToken,
   getInput,
   setFailed,
@@ -29,6 +28,7 @@ import {
   isEmptyDir,
   isPinnedToHead,
   parseMultilineCSV,
+  parseBoolean,
   parseDuration,
   pinnedToHeadWarning,
 } from '@google-github-actions/actions-utils';
@@ -79,8 +79,8 @@ export async function run(logger: Logger) {
     const oidcTokenAudience =
       getInput(`audience`) || `https://iam.googleapis.com/${workloadIdentityProvider}`;
     const credentialsJSON = getInput(`credentials_json`);
-    const createCredentialsFile = getBooleanInput(`create_credentials_file`);
-    const exportEnvironmentVariables = getBooleanInput(`export_environment_variables`);
+    const createCredentialsFile = parseBoolean(getInput(`create_credentials_file`));
+    const exportEnvironmentVariables = parseBoolean(getInput(`export_environment_variables`));
     const tokenFormat = getInput(`token_format`);
     const delegates = parseMultilineCSV(getInput(`delegates`));
     const universe = getInput(`universe`);
@@ -301,7 +301,7 @@ export async function run(logger: Logger) {
         logger.debug(`Creating id token`);
 
         const idTokenAudience = getInput('id_token_audience', { required: true });
-        const idTokenIncludeEmail = getBooleanInput('id_token_include_email');
+        const idTokenIncludeEmail = parseBoolean(getInput('id_token_include_email'));
 
         // Ensure a service_account was provided if using WIF.
         if (!serviceAccount) {
diff --git a/src/post.ts b/src/post.ts
index 9773054..0d162a5 100644
--- a/src/post.ts
+++ b/src/post.ts
@@ -12,21 +12,21 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { getBooleanInput, setFailed } from '@actions/core';
+import { getInput, setFailed } from '@actions/core';
 
-import { errorMessage, forceRemove } from '@google-github-actions/actions-utils';
+import { errorMessage, forceRemove, parseBoolean } from '@google-github-actions/actions-utils';
 
 import { Logger } from './logger';
 
 export async function run(logger: Logger) {
   try {
-    const createCredentials = getBooleanInput('create_credentials_file');
+    const createCredentials = parseBoolean(getInput('create_credentials_file'));
     if (!createCredentials) {
       logger.info(`Skipping credential cleanup - "create_credentials_file" is false.`);
       return;
     }
 
-    const cleanupCredentials = getBooleanInput('cleanup_credentials');
+    const cleanupCredentials = parseBoolean(getInput('cleanup_credentials'));
     if (!cleanupCredentials) {
       logger.info(`Skipping credential cleanup - "cleanup_credentials" is false.`);
       return;