diff --git a/requirements.txt b/requirements.txt
index acb388a..b82f47b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 setuptools==65.5.1
 setuptools_scm==6.4.2
+numpy<2.0.0
 opustools
 jieba>=0.42
 beautifulsoup4>=4.8.2
diff --git a/setup.py b/setup.py
index e5ca787..f28b3d6 100644
--- a/setup.py
+++ b/setup.py
@@ -5,6 +5,7 @@
 
 install_requires = [
     "setuptools",
+    "numpy<2.0.0",
     "opustools",
     "beautifulsoup4>=4.8.0",
     "fasttext",