diff --git a/doc/dev-doc/requirements.txt b/doc/dev-doc/requirements.txt
index a942439fe..b5fab5270 100644
--- a/doc/dev-doc/requirements.txt
+++ b/doc/dev-doc/requirements.txt
@@ -1,4 +1,5 @@
-jinja2
-gitpython
-sphinxcontrib-bibtex
-breathe
+sphinx==3.4.3
+jinja2==3.0.1
+gitpython==3.1.18
+sphinxcontrib-bibtex==2.3.0
+breathe==4.30.0