diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt
index 7f927771884..6b4804df9b8 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt
@@ -53,7 +53,7 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) :
     }
 
     override val requiredNpmDependencies: Set<RequiredKotlinJsDependency>
-        get() = requiredDependencies
+        get() = requiredDependencies + webpackConfig.getRequiredDependencies(versions)
 
     override val settingsState: String
         get() = "KotlinKarma($config)"
@@ -184,8 +184,6 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) :
         requiredDependencies.add(versions.karmaWebpack)
         requiredDependencies.add(versions.webpack)
 
-        requiredDependencies.addAll(webpackConfig.getRequiredDependencies(versions))
-
         addPreprocessor("webpack")
         confJsWriters.add {
             it.appendln()