diff --git a/development/Dockerfile b/development/Dockerfile
index 115e99ba..083b08d4 100644
--- a/development/Dockerfile
+++ b/development/Dockerfile
@@ -7,7 +7,8 @@ RUN apt-get -y update && apt-get -y install --no-install-recommends \
     git \
     && rm -rf /var/lib/apt/lists/*
 
-RUN curl -sSL https://install.python-poetry.org | python3 - && \
+# Install specific version of Poetry (1.8.5)
+RUN curl -sSL https://install.python-poetry.org | POETRY_VERSION=1.8.5 python3 - && \
     /root/.local/bin/poetry config virtualenvs.create false
 
 WORKDIR /source
diff --git a/development/Dockerfile.dockerignore b/development/Dockerfile.dockerignore
index 73c48dbc..e4501c20 100644
--- a/development/Dockerfile.dockerignore
+++ b/development/Dockerfile.dockerignore
@@ -2,3 +2,4 @@
 
 !/pyproject.toml
 !/poetry.lock
+!/README.md
\ No newline at end of file