diff --git a/environment-cpu.yml b/environment-cpu.yml
index 2419bf35..7dfe823e 100644
--- a/environment-cpu.yml
+++ b/environment-cpu.yml
@@ -10,6 +10,7 @@ dependencies:
   - pytorch>=1.8.1
   - torchaudio>=0.8
   - tqdm>=4.36
+  - numpy<2.0
   - pip
   - pip:
     - diffq>=0.2
diff --git a/environment-cuda.yml b/environment-cuda.yml
index 0d61d33d..0b3940d6 100644
--- a/environment-cuda.yml
+++ b/environment-cuda.yml
@@ -12,6 +12,7 @@ dependencies:
   - cudatoolkit>=10
   - tqdm>=4.36
   - pip
+  - numpy<2.0
   - pip:
     - diffq>=0.2
     - dora-search