diff --git a/.gitignore b/.gitignore
index 4aba1fa..bf73102 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,3 +59,4 @@ Thumbs.db
 
 # Temporary directories from sync workflows
 extension-temp/
+playground/
diff --git a/MANIFEST.in b/MANIFEST.in
index 1cc7b2a..6dadf9c 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1,2 @@
 include sentience/schemas/*.json
+recursive-include sentience/extension *.js *.json *.wasm *.d.ts
diff --git a/pyproject.toml b/pyproject.toml
index 8c88e6a..6478a18 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "sentienceapi"
-version = "0.90.2"
+version = "0.90.3"
 description = "Python SDK for Sentience AI Agent Browser Automation"
 readme = "README.md"
 requires-python = ">=3.11"
@@ -47,6 +47,9 @@ dev = [
 where = ["."]
 include = ["sentience*"]
 
+[tool.setuptools.package-data]
+sentience = ["schemas/*.json", "extension/**/*"]
+
 [tool.pytest.ini_options]
 testpaths = ["tests"]
 python_files = ["test_*.py"]
diff --git a/sentience/__init__.py b/sentience/__init__.py
index ee5915a..12304d1 100644
--- a/sentience/__init__.py
+++ b/sentience/__init__.py
@@ -64,7 +64,7 @@
 )
 from .wait import wait_for
 
-__version__ = "0.90.2"
+__version__ = "0.90.3"
 
 __all__ = [
     # Core SDK