diff --git a/brethil_dotfile.sh b/brethil_dotfile.sh
index 6cb1c1f..12c3bf5 100755
--- a/brethil_dotfile.sh
+++ b/brethil_dotfile.sh
@@ -7,7 +7,11 @@ export ZSH_THEME="brethil"
 export DISABLE_UNTRACKED_FILES_DIRTY=true
 export VIRTUAL_ENV_DISABLE_PROMPT=true
 
-# Source all other plugins
+
+_ZSH_CACHE="${HOME}/.cache/zsh"
+if [[ ! -d "${HOME}/.cache/zsh" ]]; then mkdir "${HOME}/.cache/zsh"; fi
+
+# Source all zsh plugins
 source <(antibody init)
 antibody bundle < "$DOTFILES/antibody_plugins.txt"
 export ZSH="$(antibody path robbyrussell/oh-my-zsh)"
@@ -55,9 +59,14 @@ if [[ $SSH_CLIENT ]]; then
     export SSH_AUTH_SOCK=$HOME/.ssh/ssh_auth_sock
 fi
 
-# pip completions
-if which pip &>/dev/null ; then
-    eval "$(pip completion --zsh)"
+# pip completion. Cache output since pip takes 0.4s to run
+if [[ ${commands[pip]} ]]; then
+	pip_cache_file="${_ZSH_CACHE}/pip_completion_cache.zsh"
+	if [[ "${commands[pip]}" -nt "${pip_cache_file}" || ! -s "$pip_cache_file" ]]; then
+		pip completion --zsh | sed -e "s|compctl -K [-_[:alnum:]]* pip|& pip2 pip3|" >! "$pip_cache_file" 2> /dev/null
+  fi
+  source "${pip_cache_file}"
+  unset pip_cache_file
 fi
 
 alias esource='$EDITOR $HOME/.zshrc'