diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 846a0ca2a..656dc6ee0 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -5,6 +5,9 @@ on:
 
 name: CI
 
+env:
+  VCPKGRS_DYNAMIC: 1
+
 jobs:
   rust_tests:
     name: Run rust tests
@@ -15,8 +18,16 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@master
-      - name: Convert symlinks to hardlink (windows only)
-        run: powershell.exe scripts/symlinks-to-hardlinks.ps1
+      - name: Cache Windows
+        uses: actions/cache@v1
+        with:
+          key: vcpkg
+          path: 'C:/vcpkg'
+        if: runner.os == 'Windows'
+      - name: Set up the Windows environment
+        run: |
+          powershell.exe scripts/symlinks-to-hardlinks.ps1
+          powershell.exe scripts/install-openssl.ps1
         if: runner.os == 'Windows'
       - name: Cache cargo dependencies
         uses: actions/cache@v1
@@ -40,8 +51,16 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@master
-      - name: Convert symlinks to hardlink (windows only)
-        run: powershell.exe scripts/symlinks-to-hardlinks.ps1
+      - name: Cache Windows
+        uses: actions/cache@v1
+        with:
+          key: vcpkg
+          path: 'C:/vcpkg'
+        if: runner.os == 'Windows'
+      - name: Set up the Windows environment
+        run: |
+          powershell.exe scripts/symlinks-to-hardlinks.ps1
+          powershell.exe scripts/install-openssl.ps1
         if: runner.os == 'Windows'
       - name: Cache cargo dependencies
         uses: actions/cache@v1
diff --git a/scripts/install-openssl.ps1 b/scripts/install-openssl.ps1
new file mode 100644
index 000000000..beab80edb
--- /dev/null
+++ b/scripts/install-openssl.ps1
@@ -0,0 +1,8 @@
+# From the Actix Web windows workflow:
+# https://github.com/actix/actix-web/blob/master/.github/workflows/windows.yml
+vcpkg integrate install
+vcpkg install openssl:x64-windows
+Copy-Item C:\vcpkg\installed\x64-windows\bin\libcrypto-1_1-x64.dll C:\vcpkg\installed\x64-windows\bin\libcrypto.dll
+Copy-Item C:\vcpkg\installed\x64-windows\bin\libssl-1_1-x64.dll C:\vcpkg\installed\x64-windows\bin\libssl.dll
+Get-ChildItem C:\vcpkg\installed\x64-windows\bin
+Get-ChildItem C:\vcpkg\installed\x64-windows\lib