diff --git a/requirements.txt b/requirements.txt
index 8f73bf5..8efad7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ numpy>=1.15.4,<2
 h5py>=2.7.0,<3
 scipy>=1.1,<2
 tensorflow>=1.2.0,<2
-keras>=2.2.3,<3
+keras==2.2.3
 pandas>=0.20.2,<1
 Pillow>=5.4.1,<6
 trafaret>=1,<2