diff --git a/pyproject.toml b/pyproject.toml
index cbcea59..e9e05a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ classifiers = [
 requires-python = ">=3.8,<3.12"
 dependencies = [
     "openai-whisper ==20231117",
-    "deepl ~=1.16.1",
+    "deepl >=1.16.1,<1.20.0",
     "Click ~=8.1.7"
 ]
 dynamic = ["version"]