diff --git a/poetry.lock b/poetry.lock
index 0d12cc6d..894a2805 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -229,7 +229,7 @@ marshmallow = "^3.3.0"
 webargs = "^5.5.2"
 
 [package.source]
-reference = "2854c2ea80fee1053d51edbe34cde8bbdb0364bb"
+reference = "ea5142a9642e7b852a6e1175f3c4aa1a4bfac044"
 type = "git"
 url = "https://github.com/labthings/python-labthings.git"
 [[package]]
diff --git a/pyproject.toml b/pyproject.toml
index e53c39d1..65e4def9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,4 +43,4 @@ rpi = ["picamera", "RPi.GPIO"]
 sphinxcontrib-httpdomain = "^1.7"
 rope = "^0.14.0"
 pylint = "^2.3"
-black = {version = "^18.3-alpha.0",allows-prereleases = true}
+black = {version = "^18.3-alpha.0",allow-prereleases = true}