diff --git a/Dockerfile b/Dockerfile
index 4c21515d0..afe112a40 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM python:3.10-slim
 
-RUN apt-get update && apt-get install gcc g++ git make -y
+RUN apt-get update && apt-get install gcc g++ git make -y && apt-get clean \
+	&& rm -rf /var/lib/apt/lists/*
 RUN useradd -m -u 1000 user
 USER user
 ENV HOME=/home/user \
diff --git a/pyproject.toml b/pyproject.toml
index 8851a8231..366c09f73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ cachetools = "^5.3.1"
 types-cachetools = "^5.3.0.5"
 
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.dev.dependencies]
 black = "^23.1.0"
 ipykernel = "^6.21.2"
 mypy = "^1.1.1"