diff --git a/.github/workflows/python-test.yml b/.github/workflows/python-test.yml
index a963ce7..2c458f1 100644
--- a/.github/workflows/python-test.yml
+++ b/.github/workflows/python-test.yml
@@ -14,8 +14,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        python-version: ['3.9', '3.12']
-        poetry-version: ["1.8"]
+        python-version: ['3.9', '3.13']
+        poetry-version: ["2.2"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index eaa8f68..20e02e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pyndl"
-version = "1.2.3"
+version = "1.2.4"
 description = "Naive discriminative learning implements learning and classification models based on the Rescorla-Wagner equations."
 
 license = "MIT"
@@ -28,7 +28,7 @@ classifiers = ['Development Status :: 5 - Production/Stable',
                'Topic :: Scientific/Engineering :: Information Analysis',]
 
 [tool.poetry.dependencies]
-python = ">=3.9,<3.13"  # Compatible python versions must be declared here
+python = "^3.9"  # Compatible python versions must be declared here
 numpy = ">=1.24.1"
 scipy = ">=1.13.0"
 pandas = ">=1.4.3"
@@ -38,7 +38,7 @@ Cython = ">=3.0.0"
 toml = ">=0.10.2"
 setuptools = ">=69.2.0"
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev.dependencies]
 pytest = ">=7.0"
 pytest-cov = ">=2.4"
 pydocstyle = ">=6.1.1"