diff --git a/HISTORY.md b/HISTORY.md
index 23b68c7..552461f 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,9 @@
 # History
 
+## 0.5.3 (2022-02-01)
+
+* Fix determination of slice spacing with oblique volumes
+
 ## 0.5.2 (2021-10-20)
 
 * Fix duplicate except clause
diff --git a/panimg/__init__.py b/panimg/__init__.py
index 7543e6e..a957ab2 100644
--- a/panimg/__init__.py
+++ b/panimg/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.5.2"
+__version__ = "0.5.3"
 
 import logging
 
diff --git a/pyproject.toml b/pyproject.toml
index bbe60ad..61efc79 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ commands =
 
 [tool.poetry]
 name = "panimg"
-version = "0.5.2"
+version = "0.5.3"
 description = "Conversion of medical images to MHA and TIFF."
 license = "Apache-2.0"
 authors = ["James Meakin <12661555+jmsmkn@users.noreply.github.com>"]
diff --git a/tests/test_panimg.py b/tests/test_panimg.py
deleted file mode 100644
index 616b358..0000000
--- a/tests/test_panimg.py
+++ /dev/null
@@ -1,5 +0,0 @@
-from panimg import __version__
-
-
-def test_version():
-    assert __version__ == "0.5.2"