diff --git a/requirements.txt b/requirements.txt
index 3fe201a..4744f8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ h5py < 3
 shapely
 scikit-learn
 numpy == 1.18.*  # XXX for tensorflow-gpu 1.15
-tensorflow-gpu ~=1.15.2
+tensorflow-gpu == 1.15.*
 scipy
 ocrd >= 2.18.0
 shapely >= 1.7.1