diff --git a/backend/Dockerfile b/backend/Dockerfile
index 1a8ca9b..bc35dac 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -19,7 +19,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 # Install Poetry
-RUN pip install --no-cache-dir poetry==1.8.2
+RUN pip install --no-cache-dir poetry==2.1.4
 
 # Configure Poetry to not create virtual environment (we're in a container)
 ENV POETRY_NO_INTERACTION=1 \
@@ -33,7 +33,6 @@ COPY pyproject.toml poetry.lock ./
 
 # Install dependencies using Poetry directly (simpler and more reliable)
 RUN poetry config virtualenvs.create false \
-    && poetry lock --no-update \
     && poetry install --only main --no-interaction --no-ansi \
     && rm -rf $POETRY_CACHE_DIR