diff --git a/shell.nix b/shell.nix
index 36919d2..040e198 100644
--- a/shell.nix
+++ b/shell.nix
@@ -11,7 +11,7 @@ pkgs.mkShell {
 	];
 
 	shellHook = ''
-		STIME=5
+		STIME=60
 		programs="cmatrix cbonsai nyancat fortuneCow"
 	
 		trap 'stty sane; tput cnorm; clear' EXIT
@@ -22,8 +22,10 @@ pkgs.mkShell {
 			tput sgr0	
 			case "$choice" in
 				cbonsai)
-					cbonsai -t .2
-					sleep "$STIME"
+					cbonsai -l -t 1 & pid=$!
+					( sleep "$STIME" && kill $pid ) & watcher=$!
+					wait $pid 2>/dev/null
+					kill $watcher 2>/dev/null || true
 					;;
 				cmatrix)
 					bash -c "cmatrix -u 4 & pid=\$!; sleep $STIME; kill -INT \$pid; wait \$pid"