diff --git a/CMakeLists-WinCalc.txt.in b/CMakeLists-WinCalc.txt.in
index 22f2726..6595301 100644
--- a/CMakeLists-WinCalc.txt.in
+++ b/CMakeLists-WinCalc.txt.in
@@ -4,7 +4,7 @@ include(ExternalProject)
 
 ExternalProject_Add(wincalc
     GIT_REPOSITORY https://github.com/LBNL-ETA/WinCalc.git
-    GIT_TAG "VacuumDec2023"
+    GIT_TAG "VariableAirflowCoefficients"
     
     UPDATE_COMMAND ""
     PATCH_COMMAND ""