diff --git a/.gitignore b/.gitignore
index 155fff7..e476e38 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,10 @@ data/
 doc/*
 !doc/*.md
 
+# Ignore developers composer status so it isn't accidentally checked in,
+# see https://github.com/PrivateBin/PrivateBin/issues/84
+composer.lock
+
 # Ignore vendor dir of Composer except PHP files
 vendor/*.*
 vendor/*/*.*
@@ -23,7 +27,7 @@ vendor/**/tests
 vendor/**/build_phar.php
 !vendor/**/*.php
 
-# Ignore unit testing logs, api docs and eclipse project files
+# Ignore local node modules, unit testing logs, api docs and eclipse project files
 js/node_modules/
 tst/log/
 .settings