Bump version
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4183252..40f7c3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 1.4.4
+
+- Fix a bug of `VersionRange.union` where ranges bounded at infinity would get
+  combined wrongly.
+
 # 1.4.3
 
 - Update Dart SDK constraint to `>=2.0.0 <3.0.0`.
diff --git a/pubspec.yaml b/pubspec.yaml
index e2ac3b0..a2238d2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: pub_semver
-version: 1.4.3
+version: 1.4.4
 
 description: >-
  Versions and version constraints implementing pub's versioning policy. This