diff --git a/MSBuild/Robust.Engine.Version.props b/MSBuild/Robust.Engine.Version.props
index b3a05cee10..bac96a1d37 100644
--- a/MSBuild/Robust.Engine.Version.props
+++ b/MSBuild/Robust.Engine.Version.props
@@ -1,4 +1,4 @@
-
-
- 276.0.0
-
+
+
+ 277.0.0
+
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 2fa27a2f29..e60a7b1ed4 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -39,6 +39,25 @@ END TEMPLATE-->
### New features
+*None yet*
+
+### Bugfixes
+
+*None yet*
+
+### Other
+
+*None yet*
+
+### Internal
+
+*None yet*
+
+
+## 277.0.0
+
+### New features
+
* Statics on interfaces, and other cases of `static abstract` methods and properties, are now allowed by the sandbox.
* `INumber` and all associated types in `System.Numerics` are now allowed by the sandbox.
* `BigInteger` is now allowed by the sandbox.