diff --git a/requirements/dev.txt b/requirements/dev.txt
index 89a1b267..981f0d56 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -10,8 +10,6 @@ appdirs==1.4.4
     # via virtualenv
 asgiref==3.3.4
     # via -r requirements/tests.in
-atomicwrites==1.4.0
-    # via pytest
 attrs==21.2.0
     # via pytest
 babel==2.9.1
@@ -20,6 +18,8 @@ babel==2.9.1
     #   sphinx-intl
 blinker==1.4
     # via -r requirements/tests.in
+build==0.9.0
+    # via pip-tools
 certifi==2020.12.5
     # via requests
 cfgv==3.3.0
@@ -30,12 +30,6 @@ click==8.0.1
     # via
     #   pip-tools
     #   sphinx-intl
-colorama==0.4.4
-    # via
-    #   click
-    #   pytest
-    #   sphinx
-    #   tox
 distlib==0.3.1
     # via virtualenv
 docutils==0.16
@@ -60,14 +54,15 @@ jinja2==3.0.1
     # via sphinx
 markupsafe==2.0.1
     # via jinja2
-mypy-extensions==0.4.3
-    # via mypy
 mypy==0.812
     # via -r requirements/typing.in
+mypy-extensions==0.4.3
+    # via mypy
 nodeenv==1.6.0
     # via pre-commit
 packaging==20.9
     # via
+    #   build
     #   pallets-sphinx-themes
     #   pytest
     #   sphinx
@@ -75,8 +70,8 @@ packaging==20.9
 pallets-sphinx-themes==2.0.1
     # via -r requirements/docs.in
 pep517==0.10.0
-    # via pip-tools
-pip-tools==6.1.0
+    # via build
+pip-tools==6.12.1
     # via -r requirements/dev.in
 pluggy==0.13.1
     # via
@@ -110,12 +105,6 @@ six==1.16.0
     #   virtualenv
 snowballstemmer==2.1.0
     # via sphinx
-sphinx-intl==2.0.1
-    # via -r requirements/docs.in
-sphinx-issues==1.2.0
-    # via -r requirements/docs.in
-sphinx-tabs==3.0.0
-    # via -r requirements/docs.in
 sphinx==4.0.2
     # via
     #   -r requirements/docs.in
@@ -124,6 +113,12 @@ sphinx==4.0.2
     #   sphinx-issues
     #   sphinx-tabs
     #   sphinxcontrib-log-cabinet
+sphinx-intl==2.0.1
+    # via -r requirements/docs.in
+sphinx-issues==1.2.0
+    # via -r requirements/docs.in
+sphinx-tabs==3.0.0
+    # via -r requirements/docs.in
 sphinxcontrib-applehelp==1.0.2
     # via sphinx
 sphinxcontrib-devhelp==1.0.2
@@ -140,7 +135,6 @@ sphinxcontrib-serializinghtml==1.1.4
     # via sphinx
 toml==0.10.2
     # via
-    #   pep517
     #   pre-commit
     #   pytest
     #   tox
@@ -156,6 +150,8 @@ virtualenv==20.4.6
     # via
     #   pre-commit
     #   tox
+wheel==0.38.4
+    # via pip-tools
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip