diff --git a/.github/workflows/windows-nightly.yml b/.github/workflows/windows-nightly.yml
index 67454b88f..b4b04130f 100644
--- a/.github/workflows/windows-nightly.yml
+++ b/.github/workflows/windows-nightly.yml
@@ -66,7 +66,6 @@ jobs:
 
     # declare/restore cached things
 
-
     - name: Cache stack global db   # downloaded ghcs, package indexes, third-party haskell deps
       uses: actions/cache@v1
       with:
@@ -130,7 +129,7 @@ jobs:
 
     - name: Install GHC
       run: |
-        stack --resolver=lts --no-terminal setup --install-ghc
+        stack --no-terminal setup --install-ghc
 
     # - name: Install shelltestrunner
     # - if [[ ! -x ~/.local/bin/shelltest ]]; then stack install shelltestrunner-1.9; fi
@@ -138,13 +137,13 @@ jobs:
 
     - name: Install haskell deps
       run: |
-        stack --resolver=lts --no-terminal build --test --only-dependencies
-        #  --bench --install-ghc
+        stack --no-terminal build --test --only-dependencies
+      #  --bench --install-ghc
 
     - name: Build hledger
       run: |
-        stack --resolver=lts --no-terminal install --ghc-options=-Werror --test
-        #  --bench --no-run-benchmarks --haddock --no-haddock-deps
+        stack P--no-terminal install --ghc-options=-Werror --test
+      #  --bench --no-run-benchmarks --haddock --no-haddock-deps
 
     # run hledger-lib/hledger functional tests, skipping the ones for addons
     #- COLUMNS=80 stack exec -- shelltest --execdir -j16 tests -x /bin -x /addons