diff --git a/requirements/dev.txt b/requirements/dev.txt
index 18aefd0..9ae9506 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -4,14 +4,10 @@
 #
 #    pip-compile --output-file=requirements/dev.txt requirements/dev.in
 #
-atomicwrites==1.4.0
-    # via pytest
 attrs==20.3.0
     # via pytest
 click==7.1.2
     # via pip-tools
-colorama==0.4.4
-    # via pytest
 coverage==5.4
     # via pytest-cov
 iniconfig==1.1.1
@@ -26,7 +22,9 @@ markupsafe==1.1.1
     #   mako
 packaging==20.9
     # via pytest
-pip-tools==5.5.0
+pep517==0.10.0
+    # via pip-tools
+pip-tools==6.0.1
     # via -r requirements/dev.in
 pluggy==0.13.1
     # via pytest
@@ -43,7 +41,9 @@ pytest==6.2.2
 tenjin==1.1.1
     # via -r requirements/dev.in
 toml==0.10.2
-    # via pytest
+    # via
+    #   pep517
+    #   pytest
 wheezy.template==3.0.3
     # via -r requirements/dev.in