diff --git a/setup.py b/setup.py
index 743f4562..7b295b11 100755
--- a/setup.py
+++ b/setup.py
@@ -48,9 +48,10 @@ def read(*names, **kwargs):
         "geopandas",
         "matplotlib >= 3.0.3",
         "oedialect",
+        "pandas == 1.5.3",
         # PyPSA uses a deprecated import that errors with Pyomo 6.4.3.
         # Upstream has a fix but it's not yet released.
-        "pyomo != 6.4.3",
+        "pyomo == 6.4.1",
         "pypsa == 0.20.1",
         "rtree",
         "saio",