diff --git a/shell.nix b/shell.nix
index 2f9e9a7..adcbf89 100644
--- a/shell.nix
+++ b/shell.nix
@@ -36,7 +36,7 @@ mkShell rec {
     in
     ''
       export PS1="$(echo -e '\u${icon}') {\[$(tput sgr0)\]\[\033[38;5;228m\]\w\[$(tput sgr0)\]\[\033[38;5;15m\]} (${name}) \\$ \[$(tput sgr0)\]"
-      alias gitc="git -c user.email=gburd@symas.com commit --gpg-sign=1FC1E7793410DE46 ."
+      alias gitc="git -c user.email=greg@burd.me commit --gpg-sign=22931AF7895E82DF ."
 
       # allows mix to work on the local directory
       mkdir -p .nix-mix