diff --git a/single_stage_detector/requirements.txt b/single_stage_detector/requirements.txt
old mode 100755
new mode 100644
index 99c275a04..5a2c4510f
--- a/single_stage_detector/requirements.txt
+++ b/single_stage_detector/requirements.txt
@@ -2,7 +2,7 @@ cycler==0.10.0
 kiwisolver==1.0.1
 matplotlib==2.2.2
 numpy==1.14.5
-Pillow==5.2.0
+Pillow==6.2.0
 pycocotools==2.0.0
 pyparsing==2.2.0
 python-dateutil==2.7.3