diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 494ff53..0590597 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -11,6 +11,7 @@ jobs:
           - 8.10.7
           - 9.0.2
           - 9.2.4
+          - 9.4.3
     steps:
       - uses: actions/checkout@v3
       - uses: haskell/actions/setup@v2
diff --git a/ghc-9.4.3.yaml b/ghc-9.4.3.yaml
new file mode 100644
index 0000000..6a8eb10
--- /dev/null
+++ b/ghc-9.4.3.yaml
@@ -0,0 +1 @@
+resolver: nightly-2022-12-26
diff --git a/ghc-9.4.3.yaml.lock b/ghc-9.4.3.yaml.lock
new file mode 100644
index 0000000..d31b93a
--- /dev/null
+++ b/ghc-9.4.3.yaml.lock
@@ -0,0 +1,12 @@
+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages: []
+snapshots:
+- completed:
+    sha256: bbe432b2abd6d866aa37f65a8129a5f858b7c6eaae9464f8bc2814ce92ac2d15
+    size: 573163
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/nightly/2022/12/26.yaml
+  original: nightly-2022-12-26