diff --git a/Makefile.am b/Makefile.am
index db2f7a33b5..6aa7e800ab 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -186,6 +186,7 @@ csharp_EXTRA_DIST=                                                           \
   csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs               \
   csharp/src/Google.Protobuf/WireFormat.cs                                   \
   csharp/src/Google.Protobuf/project.json                                    \
+  csharp/src/global.json                                                     \
   csharp/src/packages/repositories.config
 
 java_EXTRA_DIST=                                                                   \
diff --git a/csharp/src/global.json b/csharp/src/global.json
new file mode 100644
index 0000000000..9d5558b1a3
--- /dev/null
+++ b/csharp/src/global.json
@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "1.0.0-preview2-003131"
+  }
+}