Update flake8-annotations for Python 3.8 support

The update makes typed-ast optional for 3.8 which fixes the container
builds that would otherwise require gcc and Python headers.

1 files changed, 1 insertions, 1 deletions

diff --git a/Pipfile b/Pipfile
index 08c18ff..8ad9be0 100644
--- a/Pipfile
+++ b/Pipfile
@@ -13,7 +13,7 @@ coverage = ">= 4.4.2, == 4.*"
 pre-commit = "~= 1.18"
 pydocstyle = "~= 4.0"
 flake8 = "~= 3.7.8"
-flake8-annotations = "~=1.0"
+flake8-annotations = ">= 1.1.1, == 1.*"
 flake8-docstrings = "~=1.4"
 flake8-bugbear = "~= 19.3"
 flake8-import-order = "~= 0.18.1"