diff --git a/Golden_Repo/l/libtool/libtool-2.4.7.eb b/Golden_Repo/l/libtool/libtool-2.4.7.eb
index 3deba4f99c1f9032f88723346b209ff2295c5b29..d1b87ebc0b9846a2355f390e5763d9ff9d4bbef8 100644
--- a/Golden_Repo/l/libtool/libtool-2.4.7.eb
+++ b/Golden_Repo/l/libtool/libtool-2.4.7.eb
@@ -17,7 +17,7 @@ sources = [SOURCELOWER_TAR_GZ]
 checksums = ['04e96c2404ea70c590c546eba4202a4e12722c640016c12b9b2f1ce3d481e9a8']
 
 dependencies = [
-    ('M4', '1.4.18'),
+    ('M4', '1.4.19'),
 ]
 
 sanity_check_paths = {