diff --git a/.zsh/lib/20-history.zsh b/.zsh/lib/20-history.zsh
index b197739..bc99a8c 100644
--- a/.zsh/lib/20-history.zsh
+++ b/.zsh/lib/20-history.zsh
@@ -1,17 +1,19 @@
 ## Command history configuration
 HISTFILE=$ZDOTDIR/history
-HISTSIZE=40000
-SAVEHIST=40000
+HISTSIZE=1000000000
+SAVEHIST=1000000000
 
-setopt append_history
-setopt extended_history
+export HISTTIMEFORMAT="[%F %T] "
+setopt INC_APPEND_HISTORY
+setopt EXTENDED_HISTORY
+setopt HIST_FIND_NO_DUPS
 setopt hist_ignore_dups
 setopt hist_verify
 setopt incappendhistory
 setopt histignorespace
 setopt histnostore
 setopt share_history
-HISTORY_IGNORE='([bf]g *|disown|cd ..|cd -)'
+export HISTORY_IGNORE="([bf]g *|disown|cd ..|cd -)"
 
 # Make up and down arrow take what’s typed on the commandline in to account.