diff --git a/install.json b/install.json
index e6efd3e..5a8c002 100644
--- a/install.json
+++ b/install.json
@@ -1515,12 +1515,12 @@
       "Id": "mod:ticon",
       "Name": "Tinkers Construct",
       "DestPath": "mods/TConstruct.jar",
-      "SourceUrl": "https://github.com/GTNewHorizons/TinkersConstruct/releases/download/1.13.46-GTNH/TConstruct-1.13.46-GTNH.jar",
+      "SourceUrl": "https://github.com/GTNewHorizons/TinkersConstruct/releases/download/1.13.40-GTNH/TConstruct-1.13.40-GTNH.jar",
       "SourceType": "GitHub",
       "SourceOwner": "GTNewHorizons",
       "SourceName": "TinkersConstruct",
       "SourceRegex": "^.*\\-(|v|V)[0-9\\.\\+\\-]*?(|\\-pre|\\-GTNH|\\-gtnh)\\.jar$",
-      "SourceTag": "1.13.46-GTNH"
+      "SourceTag": "1.13.40-GTNH"
     },
     {
       "Id": "mod:thaumcraft",