diff --git a/etc/requirements.txt b/etc/requirements.txt
index 43d6bb3f77014e7657d312970e7dcd7f8d38e164..c2ce92f30a158affd69c372af3ef1af5b85f398d 100644
--- a/etc/requirements.txt
+++ b/etc/requirements.txt
@@ -68,7 +68,6 @@ Pillow==8.2.0
 pip-licenses==3.3.1
 pip-tools==6.1.0
 pipenv==2020.11.15
-pkg-resources==0.0.0
 plantuml==0.3.0
 plantuml-gentools==0.1.2
 plantuml-markdown==3.4.2
@@ -123,11 +122,11 @@ sphinxcontrib-gravizo==0.0.4
 sphinxcontrib-htmlhelp==1.0.3
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-log-cabinet==1.0.1
-sphinxcontrib-plantuml==0.20.1
+sphinxcontrib-plantuml==0.21
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.4
 SQLAlchemy==1.4.15
-SQLAlchemy-Utils==0.36.8
+SQLAlchemy-Utils==0.37.3
 StatisticalDiagrams==20.5
 threadpoolctl==2.1.0
 tokenize-rt==4.1.0