diff --git a/src/test/test_funktionen.c b/src/test/test_funktionen.c
index f9ec6c7..4c3ce24 100644
--- a/src/test/test_funktionen.c
+++ b/src/test/test_funktionen.c
@@ -204,4 +204,10 @@ void test_squareRootPlusOne(void) {
     // Add more test cases for different inputs and expected outputs
 }
 
+void test_cubeRootPlusOne(void) {
+    float result = cubeRootPlusOne(8.0);
+    TEST_ASSERT_FLOAT_WITHIN(0.000001, 3.0, result);
+    // Add more test cases for different inputs and expected outputs
+}
+
 #endif
\ No newline at end of file