diff --git a/requirements/build.in b/requirements/build.in
index 22e0086b810682e7da4184e22f8bac31e4a61a47..f30c3261e2e7b55f9a6b1a17271a8a67a183d6b4 100644
--- a/requirements/build.in
+++ b/requirements/build.in
@@ -1,4 +1,4 @@
-packaging==20.0
+packaging==20.9
 pyparsing==2.4.6
 wheel>=0.36.2
 pip-licenses==3.3.0
diff --git a/requirements/build.txt b/requirements/build.txt
index a13f7824834547e9783229da09df15ee70323cb2..6f5b841c72a218b2870e22f298774a34df9c4cf3 100644
--- a/requirements/build.txt
+++ b/requirements/build.txt
@@ -39,12 +39,10 @@ packaging==20.0
 pbr==3.1.1
     # via -r requirements/build.in
 pep517==0.9.1
-    # via
-    #   build
-    #   pip-tools
+    # via build
 pip-licenses==3.3.0
     # via -r requirements/build.in
-pip-tools==6.0.1
+pip-tools==5.5.0
     # via -r requirements/build.in
 pipenv==2020.11.15
     # via -r requirements/build.in
@@ -72,7 +70,7 @@ pyyaml==5.4.1
     #   pyaml
 requests==2.25.1
     # via pytoolbox
-six==1.14.0
+six==1.13.0
     # via
     #   -r requirements/build.in
     #   packaging
@@ -89,7 +87,7 @@ venv-run==0.1.0
     # via -r requirements/build.in
 virtualenv-clone==0.5.4
     # via pipenv
-virtualenv==20.4.3
+virtualenv==20.4.2
     # via
     #   -r requirements/build.in
     #   pipenv
diff --git a/requirements/dev.txt b/requirements/dev.txt
index c2dafd91d42deaad4d94f179c939ab6062946d06..093265c942bf802baeca66f244a5045b6446739e 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -200,9 +200,7 @@ pbr==3.1.1
     #   flask-whooshalchemy3
     #   sphinxcontrib-gravizo
 pep517==0.9.1
-    # via
-    #   build
-    #   pip-tools
+    # via build
 pillow==8.2.0
     # via
     #   -r requirements/dev.in
@@ -210,7 +208,7 @@ pillow==8.2.0
     #   visdom
 pip-licenses==3.3.0
     # via -r requirements/build.in
-pip-tools==6.0.1
+pip-tools==5.5.0
     # via -r requirements/build.in
 pipenv==2020.11.15
     # via -r requirements/build.in
@@ -238,7 +236,7 @@ psycopg2-binary==2.8.6
     # via -r requirements/dev.in
 ptable==0.9.2
     # via pip-licenses
-py2puml==0.4.0
+py2puml==0.3.1
     # via -r requirements/docs.in
 py==1.8.1
     # via pytest
@@ -334,7 +332,7 @@ semver==2.13.0
     # via flask-pluginkit
 simplejson==3.17.2
     # via pyecharts
-six==1.14.0
+six==1.13.0
     # via
     #   -r requirements/build.in
     #   click-repl
@@ -371,7 +369,7 @@ sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-log-cabinet==1.0.1
     # via -r requirements/docs.in
-sphinxcontrib-plantuml==0.20.1
+sphinxcontrib-plantuml==0.19
     # via -r requirements/docs.in
 sphinxcontrib-qthelp==1.0.3
     # via sphinx
@@ -421,7 +419,7 @@ vine==5.0.0
     #   celery
 virtualenv-clone==0.5.4
     # via pipenv
-virtualenv==20.4.3
+virtualenv==20.4.2
     # via
     #   -r requirements/build.in
     #   pipenv
diff --git a/requirements/docs.txt b/requirements/docs.txt
index a5f6704faef305ae0de487673cdc703c65f47ddc..87e65740b36b26b37f4db8e92e48e6b2c358e412 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -46,7 +46,7 @@ plantuml-wrapper==0.1.0
     # via -r requirements/docs.in
 plantuml==0.3.0
     # via plantuml-markdown
-py2puml==0.4.0
+py2puml==0.3.1
     # via -r requirements/docs.in
 pycparser==2.20
     # via cffi
@@ -92,7 +92,7 @@ sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-log-cabinet==1.0.1
     # via -r requirements/docs.in
-sphinxcontrib-plantuml==0.20.1
+sphinxcontrib-plantuml==0.19
     # via -r requirements/docs.in
 sphinxcontrib-qthelp==1.0.3
     # via sphinx