diff --git a/requirements.txt b/requirements.txt
index 3811bc5b..2ba0bcb8 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 future
 emoji
-requests
-sqlalchemy
+requests>=2.18.4
+sqlalchemy>=1.2
 python-telegram-bot==11.1.0
 psycopg2
 feedparser
@@ -24,6 +24,6 @@ googletrans==3.1.0a0
 tldextract
 PyYAML
 pyowm
-wikipedia
+wikipedia>=1.4.0
 bleach
 markdown2