diff --git a/README.md b/README.md
index e4dc720f..bd0d1762 100644
--- a/README.md
+++ b/README.md
@@ -510,6 +510,13 @@ The code is formatted using [Black](https://github.com/psf/black).
 
 ## Changelog
 
+Version 0.3.1 (August 11, 2021)
+
+- Exit with a non-zero exit code when errors occur
+  (contributed by C.A.M. Gerlach)
+- Type check the working directory if no command-line arguments
+  are given (contributed by C.A.M. Gerlach)
+
 Version 0.3.0 (August 1, 2021)
 
 - Type check calls on Unions properly
diff --git a/setup.py b/setup.py
index cb46ac92..40023740 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 from setuptools.extension import Extension
 
 
-VERSION = "0.3.0"
+VERSION = "0.3.1"
 # Used in internal packaging system.
 if "SANTA_PACKAGE_VERSION" in os.environ:
     VERSION = "%s.%s" % (VERSION, os.environ["SANTA_PACKAGE_VERSION"])