diff --git a/src/bucket.ts b/src/bucket.ts
index 001805d6d..e1171230d 100644
--- a/src/bucket.ts
+++ b/src/bucket.ts
@@ -105,7 +105,7 @@ export interface AddLifecycleRuleOptions {
 
 export interface LifecycleRule {
   action: {type: string; storageClass?: string} | string;
-  condition: {[key: string]: boolean | Date | number | string};
+  condition: {[key: string]: boolean | Date | number | string | string[]};
   storageClass?: string;
 }
 
diff --git a/system-test/storage.ts b/system-test/storage.ts
index 92279469c..9ebcde05d 100644
--- a/system-test/storage.ts
+++ b/system-test/storage.ts
@@ -1397,6 +1397,44 @@ describe('storage', () => {
       );
     });
 
+    it('should add a prefix rule', async () => {
+      await bucket.addLifecycleRule({
+        action: 'delete',
+        condition: {
+          matchesPrefix: [TESTS_PREFIX],
+        },
+      });
+
+      assert(
+        bucket.metadata.lifecycle.rule.some(
+          (rule: LifecycleRule) =>
+            typeof rule.action === 'object' &&
+            rule.action.type === 'Delete' &&
+            typeof rule.condition.matchesPrefix === 'object' &&
+            (rule.condition.matchesPrefix as string[]).length === 1 &&
+            Array.isArray(rule.condition.matchesPrefix)
+        )
+      );
+    });
+
+    it('should add a suffix rule', async () => {
+      await bucket.addLifecycleRule({
+        action: 'delete',
+        condition: {
+          matchesSuffix: [TESTS_PREFIX, 'test_suffix'],
+        },
+      });
+
+      assert(
+        bucket.metadata.lifecycle.rule.some(
+          (rule: LifecycleRule) =>
+            typeof rule.action === 'object' &&
+            rule.action.type === 'Delete' &&
+            Array.isArray(rule.condition.matchesPrefix)
+        )
+      );
+    });
+
     it('should convert a rule with createdBefore to a date in string', done => {
       bucket.addLifecycleRule(
         {