diff --git a/requirements.txt b/requirements.txt
index 0f5b03f..36749bb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pyparsing<=3.0.4;python_full_version<"3.6.8"
-scancode-toolkit
+scancode-toolkit==31.2.6
 XlsxWriter
 typecode-libmagic
 fosslight_util>=1.4.0