diff --git a/appveyor.yml b/appveyor.yml
index 127981a3..68bf3692 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,7 @@
 init:
   - git config --global core.autocrlf input
-image: Visual Studio 2017
+  - net start MSSQL$SQL2019
+image: Visual Studio 2019
 build_script:
   - cmd: build.cmd GenerateDocs
 test: off
@@ -8,5 +9,3 @@ version: 0.0.1.{build}
 artifacts:
   - path: bin
     name: bin
-services:
-  - mssql2014
diff --git a/global.json b/global.json
index aac6be5e..a327b88d 100644
--- a/global.json
+++ b/global.json
@@ -1 +1 @@
-{ "sdk": { "version": "2.1.402" } }
\ No newline at end of file
+{ "sdk": { "version": "5.0.408" } }
\ No newline at end of file
diff --git a/tests/SqlClient.Tests/app.config b/tests/SqlClient.Tests/app.config
index ac20342e..1959978b 100644
--- a/tests/SqlClient.Tests/app.config
+++ b/tests/SqlClient.Tests/app.config
@@ -12,6 +12,6 @@
   <dependentAssembly>
     <Paket>True</Paket>
     <assemblyIdentity name="FSharp.Core" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-    <bindingRedirect oldVersion="0.0.0.0-65535.65535.65535.65535" newVersion="5.0.0.0" />
+    <bindingRedirect oldVersion="0.0.0.0-65535.65535.65535.65535" newVersion="4.5.0.0" />
   </dependentAssembly>
 </assemblyBinding></runtime></configuration>
\ No newline at end of file