diff --git a/tests/unit/Providers/OpenRouterProviderTest.php b/tests/unit/Providers/OpenRouterProviderTest.php
index b650bd2..0f9d301 100644
--- a/tests/unit/Providers/OpenRouterProviderTest.php
+++ b/tests/unit/Providers/OpenRouterProviderTest.php
@@ -48,6 +48,9 @@ class OpenRouterProviderTest extends BaseTestCase {
         );
         Functions\when( 'set_transient' )->justReturn( true );
 
+        // Stub URL parsing.
+        Functions\when( 'wp_parse_url' )->alias( 'parse_url' );
+
         // Stub HTTP functions for API calls.
         Functions\when( 'wp_remote_post' )->justReturn( [
             'body'     => '{"choices":[{"message":{"content":"test"},"finish_reason":"stop"}],"usage":{"prompt_tokens":10,"completion_tokens":5,"total_tokens":15}}',
diff --git a/tests/unit/Providers/OpenRouterValidatorTest.php b/tests/unit/Providers/OpenRouterValidatorTest.php
index f7f4bf7..540e21f 100644
--- a/tests/unit/Providers/OpenRouterValidatorTest.php
+++ b/tests/unit/Providers/OpenRouterValidatorTest.php
@@ -30,6 +30,9 @@ class OpenRouterValidatorTest extends BaseTestCase {
 		// Stub wp_salt for encryption.
 		Functions\when( 'wp_salt' )->justReturn( 'test_salt_key_for_unit_tests' );
 
+		// Stub URL parsing.
+		Functions\when( 'wp_parse_url' )->alias( 'parse_url' );
+
 		// Stub HTTP functions.
 		Functions\when( 'wp_remote_get' )->justReturn( [
 			'body'     => '{}',