diff --git a/requirements/dev.txt b/requirements/dev.txt
index 3d0ac2aa2..c6dc3a0f9 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -12,6 +12,8 @@ attrs==21.2.0
     # via pytest
 babel==2.9.1
     # via sphinx
+build==0.9.0
+    # via pip-tools
 certifi==2020.12.5
     # via requests
 cfgv==3.3.0
@@ -50,6 +52,7 @@ nodeenv==1.6.0
     # via pre-commit
 packaging==20.9
     # via
+    #   build
     #   pallets-sphinx-themes
     #   pytest
     #   sphinx
@@ -57,8 +60,8 @@ packaging==20.9
 pallets-sphinx-themes==2.0.1
     # via -r requirements/docs.in
 pep517==0.10.0
-    # via pip-tools
-pip-tools==6.2.0
+    # via build
+pip-tools==6.12.1
     # via -r requirements/dev.in
 pluggy==0.13.1
     # via
@@ -118,7 +121,6 @@ sphinxcontrib-serializinghtml==1.1.5
 toml==0.10.2
     # via
     #   mypy
-    #   pep517
     #   pre-commit
     #   pytest
     #   tox