Fix .NET Core 2.1 SDK minor version
diff --git a/.travis.yml b/.travis.yml
index fd66b4b..231c1b4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: csharp
 solution: apache-nms-amqp.sln
 mono: none
-dotnet: 2.1.25
+dotnet: 2.1.202
 script:
  - dotnet build -p:AppTargetFramework=netcoreapp2.1 -c Release
  - dotnet test ./test/Apache-NMS-AMQP-Test/Apache-NMS-AMQP-Test.csproj -f netcoreapp2.1 -c Release --filter Category!=Windows
\ No newline at end of file