diff --git a/.github/workflows/run-test.yml b/.github/workflows/run-test.yml
index c1b26723..6ac998aa 100644
--- a/.github/workflows/run-test.yml
+++ b/.github/workflows/run-test.yml
@@ -27,7 +27,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install ruptures
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install pip==21.0.1
         python -m pip install .[test]
     - name: Test with pytest
       run: |
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ebc6e8fd..14d0543f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
 - repo: https://github.com/psf/black
-  rev: 20.8b1
+  rev: 21.4b0
   hooks:
     - id: black
       language_version: python3
@@ -23,13 +23,13 @@ repos:
   hooks:
     - id: docformatter
       args: [--in-place]
-- repo: https://gitlab.com/pycqa/flake8
-  rev: 3.9.0
+- repo: https://github.com/PyCQA/flake8
+  rev: 3.9.1
   hooks:
     - id: flake8
       # additional_dependencies: [flake8-docstrings, flake8-bugbear, flake8-spellcheck, flake8-import-order]
 - repo: https://github.com/kynan/nbstripout
-  rev: 0.3.9
+  rev: 0.4.0
   hooks:
     - id: nbstripout
 -   repo: https://github.com/asottile/blacken-docs
@@ -37,7 +37,7 @@ repos:
     hooks:
     - id: blacken-docs
 - repo: https://github.com/nbQA-dev/nbQA
-  rev: 0.5.9
+  rev: 0.7.0
   hooks:
     - id: nbqa-black
       args: [--nbqa-mutate]
\ No newline at end of file
diff --git a/docs/examples/kernel-cpd-performance-comparison.ipynb b/docs/examples/kernel-cpd-performance-comparison.ipynb
index 109345f4..94034ba0 100644
--- a/docs/examples/kernel-cpd-performance-comparison.ipynb
+++ b/docs/examples/kernel-cpd-performance-comparison.ipynb
@@ -50,6 +50,7 @@
     "import time  # for execution time comparison\n",
     "\n",
     "import matplotlib.pyplot as plt  # for display purposes\n",
+    "\n",
     "import ruptures as rpt  # our package\n",
     "from ruptures.metrics import hausdorff\n",
     "\n",
diff --git a/docs/examples/music-segmentation.ipynb b/docs/examples/music-segmentation.ipynb
index 0c92c9e1..5a8521f5 100644
--- a/docs/examples/music-segmentation.ipynb
+++ b/docs/examples/music-segmentation.ipynb
@@ -48,8 +48,9 @@
     "import librosa.display\n",
     "import matplotlib.pyplot as plt\n",
     "import numpy as np\n",
-    "import ruptures as rpt  # our package\n",
-    "from IPython.display import Audio, display"
+    "from IPython.display import Audio, display\n",
+    "\n",
+    "import ruptures as rpt  # our package"
    ]
   },
   {
diff --git a/docs/getting-started/basic-usage.ipynb b/docs/getting-started/basic-usage.ipynb
index 06f24dd3..c37cdb0b 100644
--- a/docs/getting-started/basic-usage.ipynb
+++ b/docs/getting-started/basic-usage.ipynb
@@ -21,6 +21,7 @@
    "outputs": [],
    "source": [
     "import matplotlib.pyplot as plt  # for display purposes\n",
+    "\n",
     "import ruptures as rpt  # our package"
    ]
   },