diff --git a/requirements/build.in b/requirements/build.in
index 7c212b0c9affff3c206ae891814b3a85b9e92781..56ef2d9a3adba5909967c1464daa1ebcf4d1916c 100644
--- a/requirements/build.in
+++ b/requirements/build.in
@@ -1,14 +1,14 @@
 packaging==20.9
 pyparsing==2.4.7
 wheel>=0.36.2
-pip-licenses==3.3.1
-pip-tools==6.0.1
+pip-licenses==3.3.0
+pip-tools==5.5.0
 pipenv>=2020.11.15
-virtualenv==20.4.3
+virtualenv==20.4.2
 pytoolbox>=14.0.0
 toml>=0.10.2
 venv-run==0.1.0
-six==1.15.0
+six==1.13.0
 pbr==3.1.1
 pre-commit==2.10.1
 chardet==3.0.4
diff --git a/setup.py b/setup.py
index 1901a20de9ac1bd3fa123020995fbd29a2787962..bd0becd94cfc4beef3a4530915acc0829776437d 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ requires_setup = [
 	"pytz==2021.1",
 	"pyyaml==5.4.1",
 	"requests==2.25.1",
-	"six==1.14.0",
+	"six==1.13.0",
 	"toml==0.10.2",
 	"urllib3==1.26.3",
 	"venv-run==0.1.0",
@@ -104,7 +104,7 @@ requires_test = [
 	"pytest==5.3.2",
 	"python-dateutil==2.8.1",
 	"python-editor==1.0.4",
-	"six==1.14.0",
+	"six==1.13.0",
 	"sqlalchemy-utils==0.36.8",
 	"sqlalchemy==1.4.5",
 	"toml==0.10.2",
@@ -142,7 +142,7 @@ requires_docs = [
 	"python-dateutil==2.8.1",
 	"pytz==2021.1",
 	"requests==2.25.1",
-	"six==1.14.0",
+	"six==1.13.0",
 	"snowballstemmer==2.1.0",
 	"speaklater==1.3",
 	"sphinx==3.4.3",
@@ -286,7 +286,7 @@ requires_install = [
 	"scipy==1.6.0",
 	"semver==2.13.0",
 	"simplejson==3.17.2",
-	"six==1.14.0",
+	"six==1.13.0",
 	"snowballstemmer==2.1.0",
 	"speaklater==1.3",
 	"sphinx==3.4.3",