diff --git a/scripts/check b/scripts/check
index bf29b677..dcde8cd1 100755
--- a/scripts/check
+++ b/scripts/check
@@ -9,7 +9,7 @@ export SOURCE_FILES="httpx tests"
 set -x
 
 ./scripts/sync-version
-${PREFIX}black --check --diff --target-version=py36 $SOURCE_FILES
+${PREFIX}black --check --diff --target-version=py37 $SOURCE_FILES
 ${PREFIX}flake8 $SOURCE_FILES
 ${PREFIX}mypy $SOURCE_FILES
 ${PREFIX}isort --check --diff --project=httpx $SOURCE_FILES
diff --git a/scripts/lint b/scripts/lint
index d05066b2..81851c64 100755
--- a/scripts/lint
+++ b/scripts/lint
@@ -10,4 +10,4 @@ set -x
 
 ${PREFIX}autoflake --in-place --recursive $SOURCE_FILES
 ${PREFIX}isort --project=httpx $SOURCE_FILES
-${PREFIX}black --target-version=py36 $SOURCE_FILES
+${PREFIX}black --target-version=py37 $SOURCE_FILES