diff --git a/requirements.txt b/requirements.txt
index 4b59e4842..661ca30d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ pandas >= 0.18.0
 pyannote.core >= 4.1
 pyannote.database >= 4.0
 pyannote.metrics >= 2.3
-pyannote.pipeline >= 1.5.2
+pyannote.pipeline >= 1.5.2, < 2.0.0
 pyYAML >= 3.12
 scikit-learn >= 0.20.2
 sortedcollections >= 1.0.1