diff --git a/setup.py b/setup.py
index a8920f8f..7329c2a2 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@
 REQUIREMENTS = [
     "resdata>=4.0.0",
     "numpy",
-    "opm>=2020.10.2,<=2022.4",  # NB: Pypi versions.
+    "opm>=2020.10.2",
     "pandas",
     "pyarrow",
     "pyyaml>=5.1",