diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f025b18..84d59764 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,16 @@
+## 4.3.3 - 2025-06-06
+
+Add `setup()` function to initialise default client
+
 ## 4.3.2 - 2025-06-06
 
 Add context management:
- - New context manager with `posthog.new_context()`
- - Tag functions: `posthog.tag()`, `posthog.get_tags()`, `posthog.clear_tags()`
- - Function decorator:
-   - `@posthog.scoped` - Creates context and captures exceptions thrown within the function
- - Automatic deduplication of exceptions to ensure each exception is only captured once
+
+- New context manager with `posthog.new_context()`
+- Tag functions: `posthog.tag()`, `posthog.get_tags()`, `posthog.clear_tags()`
+- Function decorator:
+  - `@posthog.scoped` - Creates context and captures exceptions thrown within the function
+- Automatic deduplication of exceptions to ensure each exception is only captured once
 
 ## 4.2.1 - 2025-6-05
 
diff --git a/posthog/__init__.py b/posthog/__init__.py
index 3b69182b..6a520dcf 100644
--- a/posthog/__init__.py
+++ b/posthog/__init__.py
@@ -580,8 +580,7 @@ def shutdown():
     _proxy("join")
 
 
-def _proxy(method, *args, **kwargs):
-    """Create an analytics client if one doesn't exist and send to it."""
+def setup():
     global default_client
     if not default_client:
         default_client = Client(
@@ -610,6 +609,11 @@ def _proxy(method, *args, **kwargs):
     default_client.disabled = disabled
     default_client.debug = debug
 
+
+def _proxy(method, *args, **kwargs):
+    """Create an analytics client if one doesn't exist and send to it."""
+    setup()
+
     fn = getattr(default_client, method)
     return fn(*args, **kwargs)
 
diff --git a/posthog/version.py b/posthog/version.py
index 223ba835..e5384a2b 100644
--- a/posthog/version.py
+++ b/posthog/version.py
@@ -1,4 +1,4 @@
-VERSION = "4.3.2"
+VERSION = "4.3.3"
 
 if __name__ == "__main__":
     print(VERSION, end="")  # noqa: T201