diff --git a/CMakePresets.json b/CMakePresets.json
index 72e44f1..91f6b65 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -4,6 +4,7 @@
       {
         "name": "ci",
         "cacheVariables": {
+          "GUIToolkitsVariables_ROOT": "$env{INSTALL_DIR}/guitoolkitsvariables",
           "TkUtil_ROOT": "$env{INSTALL_DIR}/tkutil",
           "QtUtil_ROOT": "$env{INSTALL_DIR}/qtutil"
         }