diff --git a/bashrc b/bashrc
index 8ea4da00..8cb116e5 100755
--- a/bashrc
+++ b/bashrc
@@ -330,6 +330,9 @@ alias myip6="curl -s6 http://icanhazip.com"
 # Curl instead of wget with warning
 alias wget="echo Running curl -LO instead of wget && curl -LO "
 
+# Update groups without logging out. Requires entering password. Source: http://blog.edwards-research.com/2010/10/linux-refresh-group-membership-without-logging-out/
+alias refrshgroups="exec su -l $USER"
+
 # Allow custom aliases to be put in .aliases or .bash_aliases .
 
 # .aliases
diff --git a/zshrc b/zshrc
index b434d6f8..505f4757 100755
--- a/zshrc
+++ b/zshrc
@@ -279,6 +279,10 @@ alias myip6="curl -s6 http://icanhazip.com"
 # Curl instead of wget with warning
 alias wget="echo Running curl -LO instead of wget && curl -LO "
 
+# Update groups without logging out. Requires entering password. Source: http://blog.edwards-research.com/2010/10/linux-refresh-group-membership-without-logging-out/
+alias refrshgroups="exec su -l $USER"
+
+
 # .aliases
 if [ -f ~/.aliases ]; then
     source ~/.aliases