diff --git a/jeevesbot/functions.py b/jeevesbot/functions.py
index b4e639a..531444f 100644
--- a/jeevesbot/functions.py
+++ b/jeevesbot/functions.py
@@ -8,17 +8,19 @@ import dice
 def resolve(url):
     return urllib.request.urlopen(url).url
 
-# use the dice module for rolling
+# use the dice module for rolling.
 def roll(notation):
     roll = dice.roll(notation)
     result = int(roll)
     return roll,result
 
+# check if user has admin role and output True if it's the case.
 def checkrole(roles):
     for role in roles:
         if str(role) == env.ADMIN_ROLE:
             return True
 
+# check if the source channel is in the list of channels that are watched by the bot.
 def checkchannel(channelid):
     if channelid in env.GIFCHANNELS:
         return True
diff --git a/requirements.txt b/requirements.txt
index 1e68491..e3176b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ typing-extensions
 pylint
 
 # needs this version, otherwise TypeErrors will break stuff
-yarl==1.5.1
\ No newline at end of file
+yarl==1.4.2
\ No newline at end of file