diff --git a/CHANGES.rst b/CHANGES.rst
index 65c0819..df714cf 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@
 CHANGES
 =======
 
+0.5.1 (2023-11-26)
+------------------
+
+ - no default ICC profile location for PDF/A-1b on Windows
+ - workaround for PNG input without dpi units but non-square dpi aspect ratio
+
 0.5.0 (2023-10-28)
 ------------------
 
diff --git a/setup.py b/setup.py
index ef13176..2b7c3e0 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 import sys
 from setuptools import setup
 
-VERSION = "0.5.0"
+VERSION = "0.5.1"
 
 INSTALL_REQUIRES = (
     "Pillow",
diff --git a/src/img2pdf.py b/src/img2pdf.py
index 82643d8..f89670b 100755
--- a/src/img2pdf.py
+++ b/src/img2pdf.py
@@ -62,7 +62,7 @@ try:
 except ImportError:
     have_pikepdf = False
 
-__version__ = "0.5.0"
+__version__ = "0.5.1"
 default_dpi = 96.0
 papersizes = {
     "letter": "8.5inx11in",