diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index a2b3286..eb4931f 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -14,10 +14,10 @@ jobs:
       - name: Python Poetry Action
         uses: abatilo/actions-poetry@v2.1.3
         with:
-          poetry-version: "1.6.1"
+          poetry-version: "2.4.1"
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: "3.13"
           cache: "poetry"
       - name: Install prerequisites
         run: |
diff --git a/.github/workflows/install-software.yml b/.github/workflows/install-software.yml
index 7b70465..14118f0 100644
--- a/.github/workflows/install-software.yml
+++ b/.github/workflows/install-software.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -26,7 +26,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         # use python-extra AND executable to tests its imports
         # https://stackoverflow.com/questions/66025220/paired-values-in-github-actions-matrix
         python-extra:
diff --git a/.github/workflows/linters.yml b/.github/workflows/linters.yml
index 4c403dc..df816bc 100644
--- a/.github/workflows/linters.yml
+++ b/.github/workflows/linters.yml
@@ -10,10 +10,10 @@ jobs:
       - name: Python Poetry Action
         uses: abatilo/actions-poetry@v3
         with:
-          poetry-version: "1.6.1"
+          poetry-version: "2.4.1"
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: "3.13"
           cache: "poetry"
       - name: Install prerequisites
         run: |
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 45b873e..c5bf9c7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,13 +9,13 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - name: Python Poetry Action
         uses: abatilo/actions-poetry@v2.1.3
         with:
-          poetry-version: "1.6.1"
+          poetry-version: "2.4.1"
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/pyproject.toml b/pyproject.toml
index 1c35133..8ac1698 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ tw_gtasks_sync = "syncall.scripts.tw_gtasks_sync:main"
 
 # end-user dependencies --------------------------------------------------------
 [tool.poetry.dependencies]
-python = ">=3.8.1,<=3.12.5"
+python = ">=3.10"
 
 PyYAML = "~5.3.1"
 bidict = "^0.21.4"
@@ -77,7 +77,7 @@ python-dateutil = "^2.9.0.post0"
 rfc3339 = "^6.2"
 item-synchronizer = "^1.1.5"
 bubop = { version = "0.1.12", allow-prereleases = true }
-setuptools = { version = "^72.1.0", optional = true, python = ">=3.12" }
+setuptools = { version = "<82", optional = true, python = ">=3.12" }
 
 [tool.poetry.extras]
 google = ["google-api-python-client", "google-auth-oauthlib", "setuptools"]