diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5bc1c31..d815f5d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   windows:
     name: windows-${{ matrix.buildtype }}
-    runs-on: windows-latest
+    runs-on: windows-2016
     strategy:
       matrix:
         buildtype: [Debug, RelWithDebInfo]
diff --git a/ci/vcpkg b/ci/vcpkg
index 50ea8c0..a9b27ed 160000
--- a/ci/vcpkg
+++ b/ci/vcpkg
@@ -1 +1 @@
-Subproject commit 50ea8c0ab7aca3bb9245bba7fc877ad2f2a4464c
+Subproject commit a9b27ed5dffbf70b135eddb0c4729f3ca87f106c