diff --git a/ChangeLog b/ChangeLog
index fda79e1f9..826953296 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+* 31.4.1
+- Fix license expression in pyproject.toml
+
 * 31.4.0
 - Google Ads API v25_1 release.
 
diff --git a/google/ads/googleads/__init__.py b/google/ads/googleads/__init__.py
index b7e9f6a93..7d220d293 100644
--- a/google/ads/googleads/__init__.py
+++ b/google/ads/googleads/__init__.py
@@ -19,7 +19,7 @@
 import google.ads.googleads.errors
 import google.ads.googleads.util
 
-VERSION = "31.4.0"
+VERSION = "31.4.1"
 
 # Checks if the current runtime is Python 3.10.
 if sys.version_info.major == 3 and sys.version_info.minor <= 10:
diff --git a/pyproject.toml b/pyproject.toml
index 1072806e8..08916d228 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,11 +18,11 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "google-ads"
-version = "31.4.0"
+version = "31.4.1"
 description = "Client library for the Google Ads API"
 readme = "./README.rst"
 requires-python = ">=3.9, <3.15"
-license = { file = "LICENSE" }
+license-expression = "Apache-2.0"
 authors = [
     {name = "Google LLC", email = "googleapis-packages@google.com"}
 ]
@@ -68,4 +68,4 @@ Repository = "https://github.com/googleads/google-ads-python"
 
 [tool.setuptools.packages.find]
 include=["google.ads.*", "examples.*"]
-exclude=["tests", "tests.*"]
\ No newline at end of file
+exclude=["tests", "tests.*"]