diff --git a/test/built-ins/Promise/prototype/then/ctor-access-count.js b/test/built-ins/Promise/prototype/then/ctor-access-count.js
index e01e593cd6..0d0cf645c9 100644
--- a/test/built-ins/Promise/prototype/then/ctor-access-count.js
+++ b/test/built-ins/Promise/prototype/then/ctor-access-count.js
@@ -25,6 +25,7 @@ info: >
     8. If S is either undefined or null, return defaultConstructor.
     9. If IsConstructor(S) is true, return S.
     10. Throw a TypeError exception.
+flags: [async]
 ---*/
 
 var callCount = 0;
diff --git a/test/built-ins/Promise/prototype/then/resolve-pending-fulfilled-prms-cstm-then.js b/test/built-ins/Promise/prototype/then/resolve-pending-fulfilled-prms-cstm-then.js
index 24cc34407f..b6cc1356de 100644
--- a/test/built-ins/Promise/prototype/then/resolve-pending-fulfilled-prms-cstm-then.js
+++ b/test/built-ins/Promise/prototype/then/resolve-pending-fulfilled-prms-cstm-then.js
@@ -25,6 +25,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var value = {};
diff --git a/test/built-ins/Promise/prototype/then/resolve-pending-rejected-prms-cstm-then.js b/test/built-ins/Promise/prototype/then/resolve-pending-rejected-prms-cstm-then.js
index b07f34fd17..0d9097303e 100644
--- a/test/built-ins/Promise/prototype/then/resolve-pending-rejected-prms-cstm-then.js
+++ b/test/built-ins/Promise/prototype/then/resolve-pending-rejected-prms-cstm-then.js
@@ -26,6 +26,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var value = {};
diff --git a/test/built-ins/Promise/prototype/then/resolve-settled-fulfilled-prms-cstm-then.js b/test/built-ins/Promise/prototype/then/resolve-settled-fulfilled-prms-cstm-then.js
index 5527a4e970..f62b96d829 100644
--- a/test/built-ins/Promise/prototype/then/resolve-settled-fulfilled-prms-cstm-then.js
+++ b/test/built-ins/Promise/prototype/then/resolve-settled-fulfilled-prms-cstm-then.js
@@ -32,6 +32,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var value = {};
diff --git a/test/built-ins/Promise/prototype/then/resolve-settled-rejected-prms-cstm-then.js b/test/built-ins/Promise/prototype/then/resolve-settled-rejected-prms-cstm-then.js
index 54085255ac..930d50897f 100644
--- a/test/built-ins/Promise/prototype/then/resolve-settled-rejected-prms-cstm-then.js
+++ b/test/built-ins/Promise/prototype/then/resolve-settled-rejected-prms-cstm-then.js
@@ -32,6 +32,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var value = {};
diff --git a/test/built-ins/Promise/race/resolve-prms-cstm-then.js b/test/built-ins/Promise/race/resolve-prms-cstm-then.js
index d90834ddf8..fd7d3e9335 100644
--- a/test/built-ins/Promise/race/resolve-prms-cstm-then.js
+++ b/test/built-ins/Promise/race/resolve-prms-cstm-then.js
@@ -26,6 +26,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var value = {};
diff --git a/test/built-ins/Promise/resolve-prms-cstm-then-deferred.js b/test/built-ins/Promise/resolve-prms-cstm-then-deferred.js
index a7c0eca492..952132fe4d 100644
--- a/test/built-ins/Promise/resolve-prms-cstm-then-deferred.js
+++ b/test/built-ins/Promise/resolve-prms-cstm-then-deferred.js
@@ -21,6 +21,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var returnValue = null;
diff --git a/test/built-ins/Promise/resolve-prms-cstm-then-immed.js b/test/built-ins/Promise/resolve-prms-cstm-then-immed.js
index 7c2794a7dd..239764cc1c 100644
--- a/test/built-ins/Promise/resolve-prms-cstm-then-immed.js
+++ b/test/built-ins/Promise/resolve-prms-cstm-then-immed.js
@@ -21,6 +21,7 @@ info: >
         [...]
     12. Perform EnqueueJob ("PromiseJobs", PromiseResolveThenableJob,
         «promise, resolution, thenAction»)
+flags: [async]
 ---*/
 
 var returnValue = null;