diff --git a/HACKING b/HACKING
index 938688d9e7..030b20680f 100644
--- a/HACKING
+++ b/HACKING
@@ -167,7 +167,7 @@ unmanageable diffs.
 
 GTK versions & API documentation
 --------------------------------
-Geany requires GTK >= 2.24 and GLib >= 2.28. API symbols from newer
+Geany requires GTK >= 2.24 and GLib >= 2.32. API symbols from newer
 GTK/GLib versions should be avoided or made optional to keep the source
 code building on older systems.