diff --git a/src/csharp/build_packages.bat b/src/csharp/build_packages.bat
index ca5b290eb90..90f4c58d03b 100644
--- a/src/csharp/build_packages.bat
+++ b/src/csharp/build_packages.bat
@@ -2,7 +2,7 @@
 
 @rem Current package versions
 set VERSION=0.14.2-pre1
-set PROTOBUF_VERSION=3.0.0-beta2
+set PROTOBUF_VERSION=3.0.0-beta3
 
 @rem Packages that depend on prerelease packages (like Google.Protobuf) need to have prerelease suffix as well.
 set VERSION_WITH_BETA=%VERSION%-beta