diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3886341e0..2fa2ff079 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
-## Upcoming
+## 4.0.0
 
-- Drop support for `py_generic_services` as it was removed from the protobuf compiler starting in version 6.30
+- BREAKING: Drop support for `py_generic_services` as it was removed from the protobuf compiler starting in version 6.30
   - https://protobuf.dev/news/2024-10-02/#rpc-service-interfaces
 - Drop testing support for protobuf <6.32 because they don't support editions
   - With some more work this could be added back in a testing refactor
diff --git a/mypy_protobuf/main.py b/mypy_protobuf/main.py
index 3700e90e5..2a6997d8c 100644
--- a/mypy_protobuf/main.py
+++ b/mypy_protobuf/main.py
@@ -27,7 +27,7 @@
 
 from . import extensions_pb2
 
-__version__ = "3.7.0"
+__version__ = "4.0.0"
 
 # SourceCodeLocation is defined by `message Location` here
 # https://github.com/protocolbuffers/protobuf/blob/master/src/google/protobuf/descriptor.proto
diff --git a/run_test.sh b/run_test.sh
index 190aa587b..a138c3127 100755
--- a/run_test.sh
+++ b/run_test.sh
@@ -93,10 +93,10 @@ MYPY_PROTOBUF_VENV=venv_$PY_VER_MYPY_PROTOBUF
     source "$MYPY_PROTOBUF_VENV"/bin/activate
 
     # Confirm version number
-    test "$(protoc-gen-mypy -V)" = "mypy-protobuf 3.7.0"
-    test "$(protoc-gen-mypy --version)" = "mypy-protobuf 3.7.0"
-    test "$(protoc-gen-mypy_grpc -V)" = "mypy-protobuf 3.7.0"
-    test "$(protoc-gen-mypy_grpc --version)" = "mypy-protobuf 3.7.0"
+    test "$(protoc-gen-mypy -V)" = "mypy-protobuf 4.0.0"
+    test "$(protoc-gen-mypy --version)" = "mypy-protobuf 4.0.0"
+    test "$(protoc-gen-mypy_grpc -V)" = "mypy-protobuf 4.0.0"
+    test "$(protoc-gen-mypy_grpc --version)" = "mypy-protobuf 4.0.0"
 
     # Run mypy on mypy-protobuf internal code for developers to catch issues
     FILES="mypy_protobuf/main.py"