diff --git a/libraries/stdlib/js-ir/build.gradle.kts b/libraries/stdlib/js-ir/build.gradle.kts
index 1f132ea1a82..47ee64c00ba 100644
--- a/libraries/stdlib/js-ir/build.gradle.kts
+++ b/libraries/stdlib/js-ir/build.gradle.kts
@@ -7,7 +7,13 @@ plugins {
 
 kotlin {
     js(IR) {
-        nodejs()
+        nodejs {
+            testTask {
+                useMocha {
+                    timeout = "10s"
+                }
+            }
+        }
     }
 }
 
diff --git a/libraries/stdlib/js-v1/build.gradle b/libraries/stdlib/js-v1/build.gradle
index c9ec54b74f1..99e05cb4cb8 100644
--- a/libraries/stdlib/js-v1/build.gradle
+++ b/libraries/stdlib/js-v1/build.gradle
@@ -348,6 +348,7 @@ task runMocha(type: NodeTask, dependsOn: [testClasses, installMocha, ':kotlin-te
         args = ['--reporter', 'min']
     }
 
+    args += ['--timeout', '10s']
     args += [jsTestOutputFile, kotlinTestJsTestOutputFile]
 
     execOverrides {