diff --git a/.github/workflows/python-test.yml b/.github/workflows/python-test.yml
index 4120553..6c1006a 100644
--- a/.github/workflows/python-test.yml
+++ b/.github/workflows/python-test.yml
@@ -53,7 +53,7 @@ jobs:
       id: install-optional
       # uncomment below to allow skipping future versions
       #if: matrix.python-version != '3.13'
-      run: python -m pip install "pentapy>=1.0" "numba>=0.49"
+      run: python -m pip install "pentapy>=1.1" "numba>=0.49"
 
     - name: Test with optional dependencies
       if: steps.install-optional.outcome == 'success'
@@ -79,13 +79,13 @@ jobs:
     - name: Install minimum dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install numpy==1.20 scipy==1.5 pytest
+        python -m pip install "numpy==1.20" "scipy==1.5" pytest
 
     - name: Test with minimum required dependencies
       run: pytest .
 
     - name: Install minimum optional dependencies
-      run: python -m pip install pentapy==1.0 numba==0.49
+      run: python -m pip install "pentapy==1.1" "numba==0.49"
 
     - name: Test with minimum optional dependencies
       run: pytest .
diff --git a/README.rst b/README.rst
index ab7bff0..e24af1d 100644
--- a/README.rst
+++ b/README.rst
@@ -32,7 +32,7 @@ pybaselines
 
 pybaselines is a library of algorithms for the baseline correction of experimental data.
 
-* For Python 3.6+
+* For Python 3.8+
 * Open Source: BSD 3-Clause License
 * Source Code: https://github.com/derb12/pybaselines
 * Documentation: https://pybaselines.readthedocs.io.
@@ -97,7 +97,7 @@ To install the current version of pybaselines from GitHub, run:
 Dependencies
 ~~~~~~~~~~~~
 
-pybaselines requires `Python <https://python.org>`_ version 3.6 or later
+pybaselines requires `Python <https://python.org>`_ version 3.8 or later
 and the following libraries:
 
 * `NumPy <https://numpy.org>`_ (>= 1.14)
diff --git a/docs/index.rst b/docs/index.rst
index 9c5d1cc..8a325fc 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -8,7 +8,7 @@ pybaselines Documentation
 
 pybaselines is a library of algorithms for the baseline correction of experimental data.
 
-* For Python 3.6+
+* For Python 3.8+
 * Open Source: BSD 3-Clause License
 * Source Code: https://github.com/derb12/pybaselines
 * Documentation: https://pybaselines.readthedocs.io.
diff --git a/docs/installation.rst b/docs/installation.rst
index b2e7f2d..90a3220 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -34,7 +34,7 @@ pybaselines has the following optional dependencies:
     * :meth:`~Baseline.mpspline`
     * all functions in :mod:`pybaselines.spline`
 
-* `pentapy <https://github.com/GeoStat-Framework/pentapy>`_ (>= 1.0):
+* `pentapy <https://github.com/GeoStat-Framework/pentapy>`_ (>= 1.1):
   provides a faster solver for banded pentadiagonal linear systems, which are
   used by the following functions (when ``diff_order=2``):
 
diff --git a/pyproject.toml b/pyproject.toml
index 64601ac..58b5c85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ Documentation = "https://pybaselines.readthedocs.io"
 
 [project.optional-dependencies]
 full = [
-    "pentapy>=1.0",  # first version with PTRANS-II solver and MIT license
+    "pentapy>=1.1",  # first version with wheels for python 3.8
     "numba>=0.49",  # first to allow usage with python 3.8
 ]
 test = [