diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 34ec64d..b8588da 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -8,9 +8,9 @@
 #
 # For more information, see https://github.com/haskell-CI/haskell-ci
 #
-# version: 0.16.6
+# version: 0.18.1
 #
-# REGENDATA ("0.16.6",["github","cached-io.cabal"])
+# REGENDATA ("0.18.1",["github","cached-io.cabal"])
 #
 name: Haskell-CI
 on:
@@ -28,14 +28,14 @@ jobs:
     strategy:
       matrix:
         include:
-          - compiler: ghc-9.8.1
+          - compiler: ghc-9.8.2
             compilerKind: ghc
-            compilerVersion: 9.8.1
+            compilerVersion: 9.8.2
             setup-method: ghcup
             allow-failure: false
-          - compiler: ghc-9.6.2
+          - compiler: ghc-9.6.4
             compilerKind: ghc
-            compilerVersion: 9.6.2
+            compilerVersion: 9.6.4
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.4.5
@@ -58,32 +58,17 @@ jobs:
             compilerVersion: 8.10.7
             setup-method: ghcup
             allow-failure: false
-          - compiler: ghc-8.8.4
-            compilerKind: ghc
-            compilerVersion: 8.8.4
-            setup-method: hvr-ppa
-            allow-failure: false
       fail-fast: false
     steps:
       - name: apt
         run: |
           apt-get update
           apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
-          if [ "${{ matrix.setup-method }}" = ghcup ]; then
-            mkdir -p "$HOME/.ghcup/bin"
-            curl -sL https://downloads.haskell.org/ghcup/0.1.19.2/x86_64-linux-ghcup-0.1.19.2 > "$HOME/.ghcup/bin/ghcup"
-            chmod a+x "$HOME/.ghcup/bin/ghcup"
-            "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
-            "$HOME/.ghcup/bin/ghcup" install cabal 3.10.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          else
-            apt-add-repository -y 'ppa:hvr/ghc'
-            apt-get update
-            apt-get install -y "$HCNAME"
-            mkdir -p "$HOME/.ghcup/bin"
-            curl -sL https://downloads.haskell.org/ghcup/0.1.19.2/x86_64-linux-ghcup-0.1.19.2 > "$HOME/.ghcup/bin/ghcup"
-            chmod a+x "$HOME/.ghcup/bin/ghcup"
-            "$HOME/.ghcup/bin/ghcup" install cabal 3.10.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          fi
+          mkdir -p "$HOME/.ghcup/bin"
+          curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
+          chmod a+x "$HOME/.ghcup/bin/ghcup"
+          "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
+          "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
         env:
           HCKIND: ${{ matrix.compilerKind }}
           HCNAME: ${{ matrix.compiler }}
@@ -95,20 +80,13 @@ jobs:
           echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
           echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$GITHUB_ENV"
           HCDIR=/opt/$HCKIND/$HCVER
-          if [ "${{ matrix.setup-method }}" = ghcup ]; then
-            HC=$HOME/.ghcup/bin/$HCKIND-$HCVER
-            echo "HC=$HC" >> "$GITHUB_ENV"
-            echo "HCPKG=$HOME/.ghcup/bin/$HCKIND-pkg-$HCVER" >> "$GITHUB_ENV"
-            echo "HADDOCK=$HOME/.ghcup/bin/haddock-$HCVER" >> "$GITHUB_ENV"
-            echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.1.0 -vnormal+nowrap" >> "$GITHUB_ENV"
-          else
-            HC=$HCDIR/bin/$HCKIND
-            echo "HC=$HC" >> "$GITHUB_ENV"
-            echo "HCPKG=$HCDIR/bin/$HCKIND-pkg" >> "$GITHUB_ENV"
-            echo "HADDOCK=$HCDIR/bin/haddock" >> "$GITHUB_ENV"
-            echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.1.0 -vnormal+nowrap" >> "$GITHUB_ENV"
-          fi
-
+          HC=$("$HOME/.ghcup/bin/ghcup" whereis ghc "$HCVER")
+          HCPKG=$(echo "$HC" | sed 's#ghc$#ghc-pkg#')
+          HADDOCK=$(echo "$HC" | sed 's#ghc$#haddock#')
+          echo "HC=$HC" >> "$GITHUB_ENV"
+          echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
+          echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
+          echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
           HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\d+)\.(\d+)\.(\d+)(\.(\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')
           echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
           echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
diff --git a/cached-io.cabal b/cached-io.cabal
index 85839d4..e0d0b28 100644
--- a/cached-io.cabal
+++ b/cached-io.cabal
@@ -12,7 +12,7 @@ author:             SumAll, Inc.
 maintainer:         Bellroy Tech Team <haskell@bellroy.com>
 category:           Development
 build-type:         Simple
-tested-with:        GHC ==8.8.4 || ==8.10.7 || ==9.0.2 || ==9.2.4 || ==9.4.5 || ==9.6.2 || ==9.8.1
+tested-with:        GHC ==8.10.7 || ==9.0.2 || ==9.2.4 || ==9.4.5 || ==9.6.4 || ==9.8.2
 extra-doc-files:
   CHANGELOG.md
   README.md