diff --git a/.github/workflows/stack.yml b/.github/workflows/stack.yml
index 7ca1818..a60d476 100644
--- a/.github/workflows/stack.yml
+++ b/.github/workflows/stack.yml
@@ -30,11 +30,6 @@ jobs:
         enable-stack: true
         stack-version: '2.15.7'
 
-    - name: Set up GHC 8.10.7 for scripts
-      uses: haskell-actions/setup@v2
-      with:
-        ghc-version: "8.10.7"
-
     - name: Configure stack
       run: |
         stack config set system-ghc --global true
diff --git a/project-files.mk b/project-files.mk
index 04a70fe..72eed4c 100644
--- a/project-files.mk
+++ b/project-files.mk
@@ -54,3 +54,5 @@ updo/Makefile:
 	curl -sSL ${UPDO_URL} | tar -xz
 	mv updo-* updo
 	chmod +x $$(grep -RIl '^#!' updo)
+	grep -RIl '^#!' updo \
+	| xargs sed --in-place -E 's/--resolver=(nightly-[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}|lts-[[:digit:]]+\.[[:digit:]]+)/--resolver=$(STACKAGE_VERSION)/g'
\ No newline at end of file