diff --git a/.packcheck.ignore b/.packcheck.ignore
index 8c71d77..408fc72 100644
--- a/.packcheck.ignore
+++ b/.packcheck.ignore
@@ -1,3 +1,4 @@
+appveyor.yml
 .github/workflows/haskell.yml
 .gitignore
 .packcheck.ignore
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..395dd48
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,95 @@
+# packcheck-0.4.2
+# You can use any of the options supported by packcheck as environment
+# variables here.  See https://github.com/harendra-kumar/packcheck for all
+# options and their explanation.
+branches:
+  only:
+    - master
+
+environment:
+    # ------------------------------------------------------------------------
+    # Global options, you can use these per build as well
+    # ------------------------------------------------------------------------
+  global:
+    # ------------------------------------------------------------------------
+    # Common options
+    # ------------------------------------------------------------------------
+    # GHC 9.2.7 onwards redundant constraint warnings are incompatible with
+    # older versions
+    GHC_OPTIONS: "-Werror"
+    CABAL_REINIT_CONFIG: "y"
+    LC_ALL: "C.UTF-8"
+
+    # ------------------------------------------------------------------------
+    # What to build
+    # ------------------------------------------------------------------------
+    # DISABLE_TEST: "y"
+    # DISABLE_BENCH: "y"
+    # DISABLE_DOCS: "y"
+    DISABLE_SDIST_BUILD: "y"
+    DISABLE_DIST_CHECKS: "y"
+    ENABLE_INSTALL: "y"
+
+    # ------------------------------------------------------------------------
+    # stack options
+    # ------------------------------------------------------------------------
+    # Note requiring a specific version of stack using STACKVER may fail due to
+    # github API limit while checking and upgrading/downgrading to the specific
+    # version.
+    # STACKVER: "1.6.5"
+    STACK_UPGRADE: "y"
+    # RESOLVER: "lts-18.27"
+    STACK_ROOT: "c:\\sr"
+    STACK_BUILD_OPTIONS: "--flag streamly-benchmarks:-opt"
+    STACK_YAML: "stack.yaml"
+
+    # ------------------------------------------------------------------------
+    # cabal options
+    # ------------------------------------------------------------------------
+    CABAL_CHECK_RELAX: "y"
+
+    # ------------------------------------------------------------------------
+    # Where to find the required tools
+    # ------------------------------------------------------------------------
+    PATH: "%PATH%;%APPDATA%\\local\\bin"
+    LOCAL_BIN: "%APPDATA%\\local\\bin"
+
+    # ------------------------------------------------------------------------
+    # Location of packcheck.sh (the shell script invoked to perform CI tests ).
+    # ------------------------------------------------------------------------
+    # You can either commit the packcheck.sh script at this path in your repo or
+    # you can use it by specifying the PACKCHECK_REPO_URL option below in which
+    # case it will be automatically copied from the packcheck repo to this path
+    # during CI tests. In any case it is finally invoked from this path.
+    PACKCHECK_LOCAL_PATH: "./packcheck.sh"
+    # If you have not committed packcheck.sh in your repo at PACKCHECK_LOCAL_PATH
+    # then it is automatically pulled from this URL.
+    PACKCHECK_GITHUB_URL: "https://raw.githubusercontent.com/composewell/packcheck"
+    PACKCHECK_GITHUB_COMMIT: "101c73b53473ddfb763d65058b80123991cfeb4f"
+
+    # Override the temp directory to avoid sed escaping issues
+    # See https://github.com/haskell/cabal/issues/5386
+    TMP: "c:\\tmp"
+
+cache:
+  - "%STACK_ROOT%"
+  - "%LOCAL_BIN%"
+  - "%APPDATA%\\cabal"
+  - "%APPDATA%\\ghc"
+# - "%LOCALAPPDATA%\\Programs\\stack"
+
+clone_folder: "c:\\pkg"
+build: off
+
+before_test:
+- if not exist %PACKCHECK_LOCAL_PATH% curl -sSkL -o%PACKCHECK_LOCAL_PATH% %PACKCHECK_GITHUB_URL%/%PACKCHECK_GITHUB_COMMIT%/packcheck.sh
+- if not exist %LOCAL_BIN% mkdir %LOCAL_BIN%
+- where stack.exe || curl -sSkL -ostack.zip http://www.stackage.org/stack/windows-x86_64 && 7z x stack.zip stack.exe && move stack.exe %LOCAL_BIN%
+- if defined STACKVER (stack upgrade --binary-only --binary-version %STACKVER%) else (stack upgrade --binary-only || ver > nul)
+- stack --version
+
+test_script:
+- stack setup > nul
+- for /f "usebackq tokens=*" %%i in (`where 7z.exe`) do set PATH7Z=%%i\..
+- for /f "usebackq tokens=*" %%i in (`where git.exe`) do set PATHGIT=%%i\..
+- chcp 65001 && stack exec bash -- -c "chmod +x %PACKCHECK_LOCAL_PATH%; %PACKCHECK_LOCAL_PATH% stack PATH=/usr/bin:\"%PATH7Z%\":\"%PATHGIT%\""