diff --git a/environment.yml b/environment.yml
index 9b4cb70e..69a7a5a6 100644
--- a/environment.yml
+++ b/environment.yml
@@ -6,12 +6,12 @@ dependencies:
   - python=3.11
   - pip
   - git
-  - numpy
+  - numpy<2.0
   - matplotlib
   - scipy
   - h5py
   - pyqt
-  - pyopengl
+  - pyopengl=3.1.6
   - pyqtwebengine
   - pytest
   - qtconsole
diff --git a/requirements.txt b/requirements.txt
index f88dc8d8..c5094d58 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 phylib
 mtscomp
-numpy
+numpy<2.0
 matplotlib
 scipy
 h5py