diff --git a/requirements.txt b/requirements.txt
index 065230c..a6f8945 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,9 @@
 beautifulsoup4==4.6.0
-certifi==2017.11.5
+certifi==2018.4.16
 chardet==3.0.4
 idna==2.6
-olefile==0.44
+olefile==0.45.1
+Pillow==5.1.0
 PyYAML==3.12
 requests==2.18.4
 urllib3==1.22
-Pillow==4.3.0