diff --git a/requirements.txt b/requirements.txt
index fb0317e4..a13a8173 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ netaddr
 psutil
 rfc5424-logging-handler
 wmi ; sys_platform == 'win32'
+pywin32 ; sys_platform == 'win32'
 yara-python