diff --git a/.appveyor.yml b/.appveyor.yml
index 9d36f77a..e0c6c837 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -71,8 +71,9 @@ install:
   - mv -f .git .git.bak
   - IF NOT "%PYTHON_VERSION%" == "2.7" (
       7z x ci\appveyor\zlib1211.zip
-      7z x ci\appveyor\kfw-4.1-src.zip
       appveyor DownloadFile https://indy.fulgan.com/SSL/Archive/Experimental/openssl-%OPENSSL_VER%-x%PYTHON_ARCH%-VC2017.zip
+      appveyor DownloadFile https://web.mit.edu/kerberos/dist/kfw/4.1/kfw-4.1-src.zip
+      7z x ci\appveyor\kfw-4.1-src.zip
       7z x openssl-%OPENSSL_VER%-x%PYTHON_ARCH%-VC2017.zip
       cp openssl-%OPENSSL_VER%-x%PYTHON_ARCH%-VC2017\libssl-1_1-x%PYTHON_ARCH%.dll ssh\ || cp openssl-%OPENSSL_VER%-x%PYTHON_ARCH%-VC2017\libssl-1_1.dll ssh\
       cp openssl-%OPENSSL_VER%-x%PYTHON_ARCH%-VC2017\libcrypto-1_1-x%PYTHON_ARCH%.dll ssh\ || cp openssl-%OPENSSL_VER%-x%PYTHON_ARCH%-VC2017\libcrypto-1_1.dll ssh\
diff --git a/.gitattributes b/.gitattributes
index 5525fd59..0bfe170e 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
 *.tar.gz filter=lfs diff=lfs merge=lfs -text
 *.rpm filter=lfs diff=lfs merge=lfs -text
+*.zip filter=lfs diff=lfs merge=lfs -text
diff --git a/ci/appveyor/kfw-4.1-src.zip b/ci/appveyor/kfw-4.1-src.zip
deleted file mode 100644
index 0c0f6f61..00000000
--- a/ci/appveyor/kfw-4.1-src.zip
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:419053cd8c3da31658a13500b2562516c748aa9cd0f83dabc9c93eb06b523ae5
-size 8171965
diff --git a/ci/appveyor/zlib1211.zip b/ci/appveyor/zlib1211.zip
index 56fc1867..db8c6583 100644
Binary files a/ci/appveyor/zlib1211.zip and b/ci/appveyor/zlib1211.zip differ