diff --git a/requirements.txt b/requirements.txt
index befcdfe..57f793e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,6 +6,6 @@ keras == 2.3.*
 shapely
 scikit-learn
 numpy == 1.18.*  # XXX for tensorflow-gpu 1.15
-tensorflow-gpu ~=1.15.2
+tensorflow-gpu ~=1.15.4
 scipy
 ocrd >= 2.0.0