diff --git a/requirements.txt b/requirements.txt
index 839d8c6..01b7687 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,9 +6,9 @@
 #
 certifi==2018.11.29       # via requests
 chardet==3.0.4            # via requests
-feedparser==5.2.1
+feedparser==5.2.1         # via -r requirements.in
 idna==2.8                 # via requests
-psutil==5.4.8
-requests==2.21.0
-typing==3.6.6
+psutil==5.6.6             # via -r requirements.in
+requests==2.21.0          # via -r requirements.in
+typing==3.6.6             # via -r requirements.in
 urllib3==1.24.1           # via requests