diff --git a/libopensesame/metadata.py b/libopensesame/metadata.py
index 5c0f2cb7b..728a1f1c4 100644
--- a/libopensesame/metadata.py
+++ b/libopensesame/metadata.py
@@ -20,7 +20,7 @@
 from distutils.version import StrictVersion
 import sys
 
-__version__ = '4.0.19'
+__version__ = '4.0.20'
 strict_version = StrictVersion(__version__)
 # The version without the prerelease (if any): e.g. 3.0.0
 main_version = '.'.join([str(i) for i in strict_version.version])
diff --git a/pyproject.toml b/pyproject.toml
index 541712f39..9fed697c9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "opensesame-core"
-version = "4.0.19"
+version = "4.0.20"
 description = "A graphical experiment builder for the social sciences"
 authors = ["Sebastiaan Mathôt <s.mathot@cogsci.nl>"]
 readme = "readme.md"