diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed0adf6..ef89d34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 #### Enhancements
 - Added `price_type` argument for `DBNStore.to_df` to specify if price fields should be `fixed`, `float` or `decimal.Decimal`
+- Added `py.typed` marker file
 - Upgraded `databento-dbn` to 0.13.0
 
 #### Breaking Changes
diff --git a/databento/py.typed b/databento/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/pyproject.toml b/pyproject.toml
index 9fe6e30..41186d7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,10 @@ authors = [
     "Databento <support@databento.com>",
 ]
 license = "Apache License 2.0"
-packages = [{include = "databento"}]
+packages = [
+    {include = "databento"},
+    {include = "databento/py.typed"},
+]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Operating System :: OS Independent",