diff --git a/requirements.txt b/requirements.txt
index 09aecc20..12d7c960 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,8 @@ setproctitle
 influxdb
 
 # FakeDataAgent
-numpy
+# 2.0 pin required until https://github.com/simonsobs/so3g/issues/184 is fixed
+numpy<2.0
 
 # Documentation generation
 # see docs/requirements.txt
diff --git a/setup.py b/setup.py
index 2d517f45..0715fbd5 100644
--- a/setup.py
+++ b/setup.py
@@ -56,7 +56,7 @@
           'deprecation',
           'PyYAML',
           'influxdb',
-          'numpy',
+          'numpy<2.0',  # pin until 2.0 is supported in so3g
           'importlib_metadata;python_version<"3.10"',
           'setproctitle',
       ],