diff --git a/relation-extraction/biobert_RE_chemprot/models/tf/requirements.txt b/relation-extraction/biobert_RE_chemprot/models/tf/requirements.txt
old mode 100755
new mode 100644
index 73e0f92..f1a51c6
--- a/relation-extraction/biobert_RE_chemprot/models/tf/requirements.txt
+++ b/relation-extraction/biobert_RE_chemprot/models/tf/requirements.txt
@@ -1,4 +1,4 @@
-tensorflow-gpu==1.15.2   # GPU version of TensorFlow >= 1.11.0. (should be under 2.0.0)
+tensorflow-gpu==2.6.4   # GPU version of TensorFlow >= 1.11.0. (should be under 2.0.0)