diff --git a/home/zshrc b/home/zshrc.sh
similarity index 96%
rename from home/zshrc
rename to home/zshrc.sh
index 25ca380..e8c6112 100644
--- a/home/zshrc
+++ b/home/zshrc.sh
@@ -38,9 +38,13 @@ zmodload -a zsh/zprof zprof
 
 PATH="$HOME/.local/bin:/usr/local/bin:/usr/local/sbin/:$PATH"
 TZ="America/Sao_Paulo"
+
+# See: 
+# [1] https://unix.stackexchange.com/questions/273861/unlimited-history-in-zsh
+# [2] https://www.reddit.com/r/zsh/comments/x7uj9e/measuring_the_best_value_of_histsize/
 HISTFILE="$HOME/.zsh_history"
-HISTSIZE=10000000
-SAVEHIST=10000000
+HISTSIZE=1000000
+SAVEHIST=1000000
 setopt BANG_HIST                 # Treat the '!' character specially during expansion.
 setopt EXTENDED_HISTORY          # Write the history file in the ":start:elapsed;command" format.
 setopt INC_APPEND_HISTORY        # Write to the history file immediately, not when the shell exits.