diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20c4c58..421c6ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Version 0.5.2
+
+- Restrict IRanges to the last compatible version before the migration.
+
 ## Version 0.5.1
 
 - Fixed an issue with numpy arrays as slice arguments. Code now uses Biocutils's subset functions to perform these operations.
diff --git a/setup.cfg b/setup.cfg
index 2d3326e..bcb6e56 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -50,7 +50,7 @@ python_requires = >=3.9
 install_requires =
     importlib-metadata; python_version<"3.8"
     biocframe>=0.5.11
-    iranges[optional]>=0.2.12
+    iranges[optional]>=0.2.12,<0.4.0
     biocutils>=0.1.3
     numpy