diff --git a/requirements.txt b/requirements.txt
index 9d528c0..639d7c0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 numpy
 calamari-ocr
+setuptools >= 41.0.0  # tensorboard depends on this, but why do we get an error at runtime?
 tensorflow-gpu
 click
-ocrd >= 1.0.0b11
\ No newline at end of file
+ocrd >= 1.0.0b11