diff --git a/VERSION b/VERSION
index a7ee35a..227cea2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.8.3
+2.0.0
diff --git a/pyproject.toml b/pyproject.toml
index 36e4b9b..7df8374 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "pdm.backend"
 
 [project]
 name = "sse-starlette"
-version = "1.8.3"
+version = "2.0.0"
 description = "SSE plugin for Starlette"
 readme = "README.md"
 license = {text = "BSD-3-Clause"}
@@ -38,7 +38,7 @@ Source = "https://github.com/sysid/sse-starlette"
 examples = ["fastapi"]
 
 [tool.bumpversion]
-current_version = "1.8.3"
+current_version = "2.0.0"
 commit = true
 tag = false
 message = "Bump version to {new_version}"
diff --git a/sse_starlette/__init__.py b/sse_starlette/__init__.py
index d83cc32..08c482e 100644
--- a/sse_starlette/__init__.py
+++ b/sse_starlette/__init__.py
@@ -1,4 +1,4 @@
 from sse_starlette.sse import EventSourceResponse, ServerSentEvent
 
 __all__ = ["ServerSentEvent", "EventSourceResponse"]
-__version__ = "1.8.3"
+__version__ = "2.0.0"