diff --git a/requirements.txt b/requirements.txt
index ba0da20..4df8d9c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 av==10.*
-ctranslate2>=3.22,<4
+ctranslate2>=4.0,<5
 huggingface_hub>=0.13
 tokenizers>=0.13,<0.16
 onnxruntime>=1.14,<2