diff --git a/appveyor.yml b/appveyor.yml
index 43d3b1da1..6edd56b5b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -13,13 +13,13 @@
   #---------------------------------#
 
   # version format (you need to bump it when changing version)
-  version: 1.8.13
+  version: 1.8.13.131
 
   # branches
   branches:
     # whitelist
     only:
-      - master
+      - support/rt-1.8.13.131
     # blacklist
     except:
       - gh-pages
@@ -65,7 +65,7 @@
     - cmd: set GAMEDATA_FOLDER=%APPVEYOR_BUILD_FOLDER%\GameData
     - cmd: set ASSEMBLY_FOLDER=%GAMEDATA_FOLDER%\RemoteTech\Plugins
     # download required KSP DLLs
-    - cmd: curl -fsS -o%DOWNLOAD_FOLDER%\dlls.7z https://d237kiopfuf7h0.cloudfront.net/download/KSPDLL_1_4_5.zip
+    - cmd: curl -fsS -o%DOWNLOAD_FOLDER%\dlls.7z https://d237kiopfuf7h0.cloudfront.net/download/KSPDLL_1_3_1.zip
     # extract them
     - cmd: cd %DOWNLOAD_FOLDER% & dir
     - cmd: 7z.exe e -p%DLL_ARCH_PASS% -o%ASSEMBLY_FOLDER% %DOWNLOAD_FOLDER%\dlls.7z
@@ -155,7 +155,7 @@
       prerelease: false
       # which branch?
       on:
-        branch: master
+        branch: support/rt-1.8.13.131
         # deploy on tag push only
         #appveyor_repo_tag: true