diff --git a/analysis/model/src/test/kotlin/de/maibornwolff/codecharta/serialization/ProjectSerializerTest.kt b/analysis/model/src/test/kotlin/de/maibornwolff/codecharta/serialization/ProjectSerializerTest.kt
index 1a672437974..f092edaff80 100644
--- a/analysis/model/src/test/kotlin/de/maibornwolff/codecharta/serialization/ProjectSerializerTest.kt
+++ b/analysis/model/src/test/kotlin/de/maibornwolff/codecharta/serialization/ProjectSerializerTest.kt
@@ -6,10 +6,12 @@ import io.mockk.every
 import io.mockk.mockk
 import io.mockk.mockkObject
 import io.mockk.slot
+import io.mockk.unmockkAll
 import io.mockk.verify
 import mu.KLogger
 import mu.KotlinLogging
 import org.assertj.core.api.Assertions
+import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.Test
 import org.skyscreamer.jsonassert.JSONAssert
 import org.skyscreamer.jsonassert.JSONCompareMode
@@ -27,6 +29,11 @@ class ProjectSerializerTest {
     val filename = tempDir.absolute().toString() + "test.cc.json"
     val project = mockk<Project>()
 
+    @AfterEach
+    fun afterTest() {
+        unmockkAll()
+    }
+
     @Test
     fun `should serialize project`() {
         val jsonReader = this.javaClass.classLoader.getResourceAsStream(EXAMPLE_JSON_VERSION_1_3)!!.reader()