diff --git a/el9/packages.txt b/el9/packages.txt
index 56a175f..3cafcc9 100644
--- a/el9/packages.txt
+++ b/el9/packages.txt
@@ -72,7 +72,7 @@ expat-devel
 ghostscript
 krb5-devel
 bc
-
+libstdc++-devel
 
 bc
 xrootd-client