diff --git a/requirements/build.in b/requirements/build.in
index 22e97e9e355d5675a403f413c62c4d2bd60b1501..5f01d2fffc80c2a3349527beb48501ab1db7a56d 100644
--- a/requirements/build.in
+++ b/requirements/build.in
@@ -1,4 +1,4 @@
-packaging==20.9
+packaging==20.0
 pyparsing==2.4.6
 wheel>=0.36.2
 pip-licenses==3.3.0
diff --git a/requirements/build.txt b/requirements/build.txt
index d0dcba885cf9cdafccd897b290a6d8a1c9b0f892..8ef50e914fafd27da10e4b217b0c2338458a59a1 100644
--- a/requirements/build.txt
+++ b/requirements/build.txt
@@ -8,7 +8,7 @@ appdirs==1.4.4
     # via virtualenv
 argparse==1.4.0
     # via pytoolbox
-build==0.3.0
+build==0.3.1.post1
     # via -r requirements/build.in
 certifi==2020.12.5
     # via
@@ -32,17 +32,19 @@ idna==2.10
     # via requests
 nodeenv==1.5.0
     # via pre-commit
-packaging==20.0
+packaging==20.9
     # via
     #   -r requirements/build.in
     #   build
 pbr==3.1.1
     # via -r requirements/build.in
 pep517==0.9.1
-    # via build
+    # via
+    #   build
+    #   pip-tools
 pip-licenses==3.3.0
     # via -r requirements/build.in
-pip-tools==5.5.0
+pip-tools==6.0.1
     # via -r requirements/build.in
 pipenv==2020.11.15
     # via -r requirements/build.in
@@ -60,8 +62,6 @@ python-dotenv==0.15.0
     # via -r requirements/build.in
 python-magic==0.4.22
     # via pytoolbox
-pytoml==0.1.21
-    # via -r requirements/build.in
 pytoolbox==14.0.0
     # via -r requirements/build.in
 pytz==2021.1
@@ -75,10 +75,10 @@ requests==2.25.1
 six==1.14.0
     # via
     #   -r requirements/build.in
-    #   packaging
     #   virtualenv
 toml==0.10.2
     # via
+    #   -r requirements/build.in
     #   build
     #   pep517
     #   pre-commit
@@ -88,7 +88,7 @@ venv-run==0.1.0
     # via -r requirements/build.in
 virtualenv-clone==0.5.4
     # via pipenv
-virtualenv==20.4.2
+virtualenv==20.4.3
     # via
     #   -r requirements/build.in
     #   pipenv