diff --git a/src/c/funktionen.h b/src/c/funktionen.h
index 767df58..8377a0d 100644
--- a/src/c/funktionen.h
+++ b/src/c/funktionen.h
@@ -10,4 +10,7 @@ float squareRoot(float x);
 // Function to calculate the cube of a number
 float cube(float x);
 
+// Function to calculate the cube root of a number
+float cubeRoot(float x);
+
 #endif
\ No newline at end of file