diff --git a/setup.py b/setup.py
index 707b622..3b02518 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@ plugin_url = "https://github.com/gillg/OctoPrint-LDAP"
 plugin_license = "AGPLv3"
 
 # Any additional requirements besides OctoPrint should be listed here
-plugin_requires = ["python-ldap","uuid"]
+plugin_requires = ["python-ldap","uuid","ldap3"]
 
 # Additional package data to install for this plugin. The subfolders "templates", "static" and "translations" will
 # already be installed automatically if they exist.
@@ -62,4 +62,4 @@ setup(**octoprint_setuptools.create_plugin_setup_parameters(
 	license=plugin_license,
 	requires=plugin_requires,
 	additional_data=plugin_additional_data
-))
\ No newline at end of file
+))