diff --git a/requirements/build.txt b/requirements/build.txt
index 8ef50e914fafd27da10e4b217b0c2338458a59a1..a13f7824834547e9783229da09df15ee70323cb2 100644
--- a/requirements/build.txt
+++ b/requirements/build.txt
@@ -32,7 +32,7 @@ idna==2.10
     # via requests
 nodeenv==1.5.0
     # via pre-commit
-packaging==20.9
+packaging==20.0
     # via
     #   -r requirements/build.in
     #   build
@@ -75,6 +75,7 @@ requests==2.25.1
 six==1.14.0
     # via
     #   -r requirements/build.in
+    #   packaging
     #   virtualenv
 toml==0.10.2
     # via
diff --git a/requirements/docs.in b/requirements/docs.in
index c12d2abd0ce08c33b374d83c4109412b339c616e..e6814ab299687a19bb3338f27817b0818786e837 100644
--- a/requirements/docs.in
+++ b/requirements/docs.in
@@ -1,12 +1,11 @@
 sphinx>=3.4.3,<3.5.0
-sphinxcontrib-plantuml==0.19
+sphinxcontrib-plantuml==0.20.1
 sphinxcontrib-gravizo==0.0.4
 sphinxcontrib-log-cabinet==1.0.1
-py2puml>=0.3.1
-plantuml-creator==1.0.7
+py2puml>=0.4.0
 plantuml-markdown==3.4.2
 plantuml-wrapper==0.1.0
-plantuml2freemind==0.8.2
 plantuml-gentools==0.1.2
 speaklater==1.3
 tokenize-rt>=4.1.0
+sphinxcontrib-github>=0.1.3
diff --git a/setup.py b/setup.py
index 91672eeb55da0867ab13fdfa36a8893e10efed63..a17a546efd15a2d5b9de837be56fcb60754961cd 100644
--- a/setup.py
+++ b/setup.py
@@ -137,7 +137,6 @@ requires_docs = [
     "packaging==20.0",
     "pastel==0.2.1",
     "pbr==5.5.1",
-    "plantuml-creator==1.0.7",
     "plantuml-gentools==0.1.2",
     "plantuml-markdown==3.4.2",
     "plantuml-wrapper==0.1.0",
@@ -258,7 +257,6 @@ requires_install = [
 	"pip-licenses==3.3.0",
 	"pip-tools==5.5.0",
 	"pipenv==2020.11.15",
-	"plantuml-creator==1.0.7",
 	"plantuml-gentools==0.1.2",
 	"plantuml-markdown==3.4.2",
 	"plantuml-wrapper==0.1.0",