diff --git a/.travis.yml b/.travis.yml
index 0d7e697..39e890e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ sudo: required
 before_install:
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then ulimit -n 2048; fi
 install:
-  - sudo apt-get install -qq dotnet-sdk-2.2=2.2.100*
+  - sudo apt-get install -qq dotnet-sdk-2.2=2.2.402* # csmacnz.Coveralls is not compatible with dotnet-3x
   - dotnet tool install -g dotnet-format --version 4.0.40103 --add-source https://dotnet.myget.org/F/format/api/v3/index.json
   - dotnet tool install -g coveralls.net --version 1.0.0
   - export PATH="$PATH:$HOME/.dotnet/tools"