diff --git a/features/scaffold-plugin-tests.feature b/features/scaffold-plugin-tests.feature
index b224dbd3..4376b8da 100644
--- a/features/scaffold-plugin-tests.feature
+++ b/features/scaffold-plugin-tests.feature
@@ -143,6 +143,31 @@ Feature: Scaffold plugin unit tests
                   SKIP_DB_CREATE=true
       """
 
+  Scenario: Scaffold plugin tests ignore invalid version in readme.txt
+    Given a WP install
+    And I run `wp scaffold plugin hello-world --skip-tests`
+
+    When I run `wp plugin path hello-world --dir`
+    Then save STDOUT as {PLUGIN_DIR}
+
+    Given a {PLUGIN_DIR}/readme.txt file:
+      """
+      === Hello World ===
+      Requires at least: 6.4; echo exploit #
+      Tested up to: 6.4
+      """
+
+    When I run `wp scaffold plugin-tests hello-world --ci=circle`
+    Then STDOUT should not be empty
+    And the {PLUGIN_DIR}/.circleci/config.yml file should not contain:
+      """
+      6.4; echo exploit #
+      """
+    And the {PLUGIN_DIR}/.circleci/config.yml file should contain:
+      """
+                  bash bin/install-wp-tests.sh wordpress_test root '' 127.0.0.1 latest $SKIP_DB_CREATE
+      """
+
   Scenario: Scaffold plugin tests with Gitlab as the provider
     Given a WP install
     And I run `wp scaffold plugin hello-world --skip-tests`
diff --git a/src/Scaffold_Command.php b/src/Scaffold_Command.php
index f1a3e6be..dc3441b1 100644
--- a/src/Scaffold_Command.php
+++ b/src/Scaffold_Command.php
@@ -893,9 +893,11 @@ private function scaffold_plugin_theme_tests( $args, $assoc_args, $type ) {
 		if ( file_exists( "{$target_dir}/readme.txt" ) ) {
 			$readme_content = (string) file_get_contents( "{$target_dir}/readme.txt" );
 
-			preg_match( '/Requires at least\:(.*)\n/m', $readme_content, $matches );
-			if ( isset( $matches[1] ) && $matches[1] ) {
-				$wp_versions_to_test[] = trim( $matches[1] );
+			if ( preg_match( '/Requires at least\:(.*)(?:\r?\n|$)/i', $readme_content, $matches ) ) {
+				$version = trim( $matches[1] );
+				if ( preg_match( '/^[0-9]+(?:\.[0-9]+)*(?:-[a-zA-Z0-9.]+)?$/', $version ) ) {
+					$wp_versions_to_test[] = $version;
+				}
 			}
 		}
 		$wp_versions_to_test[] = 'latest';