diff --git a/libs/libc/include/stdlib.h b/libs/libc/include/stdlib.h
index 647a9b04..1909b7e6 100644
--- a/libs/libc/include/stdlib.h
+++ b/libs/libc/include/stdlib.h
@@ -30,6 +30,9 @@ extern "C"
     /* Returns an integer (of type long long) parsed from the string str. */
     long long atoll(const char* str);
 
+    /* Returns an integer (of type unsigned long) parsed from the string str. */
+    unsigned long strtoul(const char* str, const char** endptr, int base);
+
     /* Not implemented. */
     char* getenv(const char*);
 
diff --git a/libs/libc/src/stdlib.cpp b/libs/libc/src/stdlib.cpp
index 283d3154..36d7e0e7 100644
--- a/libs/libc/src/stdlib.cpp
+++ b/libs/libc/src/stdlib.cpp
@@ -46,9 +46,16 @@ extern "C"
         return string_to_integer_type<long long>(str);
     }
 
+    unsigned long strtoul(const char* str, const char** endptr, int base)
+    {
+        if (base != 0 && base != 10) NOT_IMPLEMENTED("strtoul with base not in (0,10)");
+        if (endptr) NOT_IMPLEMENTED("strtoul with non-null endptr");
+        return string_to_integer_type<unsigned long>(str);
+    }
+
     char* getenv(const char*)
     {
-        NOT_IMPLEMENTED("getenv");
+        return NULL; // Not implemented :)
     }
 
     __lc_noreturn void _Exit(int status)