diff --git a/plugins/techdocs/mkdocs/container/techdocs-core/requirements.txt b/plugins/techdocs/mkdocs/container/techdocs-core/requirements.txt
index 2a13d1a9da..70b28e00bd 100644
--- a/plugins/techdocs/mkdocs/container/techdocs-core/requirements.txt
+++ b/plugins/techdocs/mkdocs/container/techdocs-core/requirements.txt
@@ -1,3 +1,6 @@
+# Fixes an error related to using Setuptools.
+setuptools==47.3.1
+
 # The "base" version of the Mkdocs project.
 # Note: if you update this, also update `install_requires` in setup.py
 # https://github.com/mkdocs/mkdocs