diff --git a/.appveyor.yml b/.appveyor.yml
index 688fe27d0..1c027196d 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -38,7 +38,10 @@ install:
 - curl -skL -ostack.zip http://www.stackage.org/stack/windows-x86_64
 - 7z x stack.zip stack.exe
 # install ghc
-# 8.2 for hledger-web -> network, https://github.com/haskell/network/issues/313
+# using 8.2 to avoid a hledger-web -> network/stack build issue on windows
+# https://github.com/haskell/network/issues/313
+# https://github.com/commercialhaskell/stack/issues/3944
+# network 2.7.0.1 should work around it when released
 - stack --stack-yaml=stack-ghc8.2.yaml setup
 # 20180530 no happy today; guess we must ensure it
 - stack install happy