diff --git a/build.cake b/build.cake
index 9f48732c..582a9f49 100644
--- a/build.cake
+++ b/build.cake
@@ -14,8 +14,8 @@ var isNetstandard16Build = targetFramework == "netstandard1.6";
 var isNetstandard20Build = targetFramework == "netstandard2.0";
 
 var version = isNetstandard20Build
-    ? "3.7.0"
-    : "2.7.0";
+    ? "3.8.0"
+    : "2.8.0";
 
 var isAppveyor = BuildSystem.IsRunningOnAppVeyor;
 var dbgSuffix = configuration == "Debug" ? "-dbg" : "";