diff --git a/VERSION b/VERSION
index b2e2357..4f08b9f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-MsSpec-1.4post1
+MsSpec-1.4post3
diff --git a/src/msspec/__init__.py b/src/msspec/__init__.py
index 909fe02..a19c6ca 100644
--- a/src/msspec/__init__.py
+++ b/src/msspec/__init__.py
@@ -1 +1 @@
-__version__ = '1.4post1'
+__version__ = '1.4post3'
diff --git a/src/msspec/msspecgui/__init__.py b/src/msspec/msspecgui/__init__.py
index 909fe02..a19c6ca 100644
--- a/src/msspec/msspecgui/__init__.py
+++ b/src/msspec/msspecgui/__init__.py
@@ -1 +1 @@
-__version__ = '1.4post1'
+__version__ = '1.4post3'