diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 893ccd9..70e1148 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ audit:
         - pushes
     needs: []
     before_script:
-        - pip install poetry==1.1.13
+        - pip install poetry==1.3.1
         - poetry config virtualenvs.create false
         - poetry install --no-interaction --no-ansi
     script:
@@ -47,7 +47,7 @@ test:
         DATABASE_URL: "postgresql://postgres:postgres@postgres:5432/$POSTGRES_DB"
         DB_HOST: postgres
     before_script:
-        - pip install poetry==1.1.13
+        - pip install poetry==1.3.1
         - poetry config virtualenvs.create false
         - poetry install --no-interaction --no-ansi
     script:
diff --git a/Dockerfile b/Dockerfile
index 75c5566..707fd3d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM python:3.9-slim-buster as builder
 ENV PYTHONUNBUFFERED 1
 COPY . ./
 
-ENV POETRY_VERSION=1.1.13
+ENV POETRY_VERSION=1.3.1
 
 RUN pip install "poetry==$POETRY_VERSION"
 RUN poetry export --without-hashes > requirements.txt
diff --git a/README.md b/README.md
index c758af0..0d261bb 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ For depedencies and virtual environment, we use [poetry](https://python-poetry.o
 First install [python](https://wiki.python.org/moin/BeginnersGuide/Download). Then install poetry:
 
 ```bash
-python3 -m pip install poetry
+python3 -m pip install poetry==1.3.1
 ```
 
 The easiest integration with VSCode is to have poetry install virtual environment in project folder, configured with CMD