diff --git a/pyproject.toml b/pyproject.toml
index 02b1edf..981285b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "substrate"
-version = "120240502.0.1"
+version = "120240502.0.2"
 description = "Substrate Python SDK"
 readme = "README.md"
 authors = [ "vprtwn <ben@substrate.run>", "liamgriffiths <liam@substrate.run>",]
diff --git a/scripts/sync_version.py b/scripts/sync_version.py
index b8029c0..1a67191 100644
--- a/scripts/sync_version.py
+++ b/scripts/sync_version.py
@@ -10,7 +10,7 @@ def ok(message):
     print("\033[32m✓\033[0m", message)
 
 
-SDK_VERSION = "1.0.1"
+SDK_VERSION = "1.0.2"
 
 # Update version
 version_path = "substrate/GEN_VERSION"
@@ -29,3 +29,12 @@ def ok(message):
     with open(toml_path, "w") as f:
         toml.dump(toml_content, f)
     ok(f"Updated version to {new_version} in {toml_path}")
+
+# Write the API Version (as a formatted date) to the following. This is used by the
+# SDK client to select which API version to use and should be in sync with the types
+# used in the SDK.
+version_file = "substrate/_version.py"
+with open(version_file, "w") as f:
+    version_file_content = f"__version__ = \"{new_version}\""
+    f.write(version_file_content)
+    ok(f"Updated {version_file} content to {version_file_content}")
diff --git a/substrate/_version.py b/substrate/_version.py
index fb76ca0..d2b8f93 100644
--- a/substrate/_version.py
+++ b/substrate/_version.py
@@ -1 +1 @@
-__version__ = "020240311.0.1"
+__version__ = "120240502.0.2"
\ No newline at end of file