diff --git a/src/conversionOfNumbers/conversionOfNumbers.h b/src/conversionOfNumbers/conversionOfNumbers.h
index 9fb79c1..3422e06 100644
--- a/src/conversionOfNumbers/conversionOfNumbers.h
+++ b/src/conversionOfNumbers/conversionOfNumbers.h
@@ -4,5 +4,6 @@
 char* convertIntToBinaryStr(int input);
 int binaryStrLen(int input);
 unsigned int convertBinaryStrToInt(char* input);
+char* convertIntToHex(int input);
 
 #endif
\ No newline at end of file