diff --git a/cellprofiler_core/__init__.py b/cellprofiler_core/__init__.py
index 3a6bf39e..0fd7811c 100644
--- a/cellprofiler_core/__init__.py
+++ b/cellprofiler_core/__init__.py
@@ -1 +1 @@
-__version__ = "4.1.3"
+__version__ = "4.2.0"
diff --git a/docs/conf.py b/docs/conf.py
index 7f12d4f3..42fd105f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -12,6 +12,6 @@
 
 project = "CellProfiler-core"
 
-release = "4.1.3"
+release = "4.2.0"
 
 templates_path = ["_templates"]
diff --git a/setup.cfg b/setup.cfg
index ab4afff1..53654bb1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,6 +3,6 @@ filterwarnings =
     ignore::DeprecationWarning
     ignore::FutureWarning
 minversion =
-    4.1.3
+    4.2.0
 testpaths =
     ./tests/
diff --git a/setup.py b/setup.py
index 1b279f54..1888b03c 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
         "numpy>=1.18.2",
         "prokaryote==2.4.2",
         "psutil>=5.7.0",
-        "python-bioformats==4.0.4",
+        "python-bioformats==4.0.5",
         "python-javabridge==4.0.3",
         "pyzmq==18.0.1",
         "scikit-image>=0.16.2",
@@ -41,6 +41,6 @@
     packages=setuptools.find_packages(exclude=["tests"]),
     python_requires=">=3.8",
     url="https://github.com/CellProfiler/core",
-    version="4.1.3",
+    version="4.2.0",
     zip_safe=False,
 )