diff --git a/Tools/environment_install/install-prereqs-ubuntu.sh b/Tools/environment_install/install-prereqs-ubuntu.sh
index 3f2a54458a..ffa3b37df3 100755
--- a/Tools/environment_install/install-prereqs-ubuntu.sh
+++ b/Tools/environment_install/install-prereqs-ubuntu.sh
@@ -65,7 +65,7 @@ case ${RELEASE_CODENAME} in
     vanessa)
         RELEASE_CODENAME='jammy'
         ;;
-    una | uma | ulyssa | ulyana)
+    una | uma | ulyssa | ulyana | jolnir)
         RELEASE_CODENAME='focal'
         ;;
     tricia | tina | tessa | tara)