diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 496bfc9..47dac5f 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -62,7 +62,7 @@ jobs:
         run: python -m pip install --upgrade pip setuptools wheel
 
       - name: Install project as a package
-        run: python -m pip install .[docs]
+        run: python -m pip install .[docs,properdocs]
 
       - name: Build static website
         env:
diff --git a/.github/workflows/lint-and-tests.yml b/.github/workflows/lint-and-tests.yml
index 21b96d8..16f0eb6 100644
--- a/.github/workflows/lint-and-tests.yml
+++ b/.github/workflows/lint-and-tests.yml
@@ -25,6 +25,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        static-generator:
+          - "mkdocs"
+          - "properdocs"
         python-version:
           - "3.10"
           - "3.11"
@@ -49,7 +52,7 @@ jobs:
         run: python -m pip install --upgrade pip setuptools wheel
 
       - name: Install project as a package
-        run: python -m pip install .[test]
+        run: python -m pip install .[test,${{ matrix.static-generator }}]
 
       - name: Run Unit tests
         run: python -m pytest
@@ -59,7 +62,7 @@ jobs:
         with:
           env_vars: PYTHON
           flags: unittests
-          name: Code Coverage for unittests on python-${{ matrix.python-version }}]
+          name: Code Coverage for unittests on ${{ matrix.static-generator }}-python-${{ matrix.python-version }}]
         env:
           PYTHON: ${{ matrix.python-version }}
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/README.md b/README.md
index a628452..5887809 100644
--- a/README.md
+++ b/README.md
@@ -17,10 +17,18 @@ A plugin for [MkDocs](https://www.mkdocs.org), the static site generator, which
 
 ## Installation
 
+Since its version 1.20.0, the plugin does not force a documentation generator on you: pick the one you use through an extra.
+
 ```sh
-pip install mkdocs-rss-plugin
+# with MkDocs
+pip install "mkdocs-rss-plugin[mkdocs]"
+
+# with ProperDocs
+pip install "mkdocs-rss-plugin[properdocs]"
 ```
 
+> If MkDocs or ProperDocs is already installed in your environment, `pip install mkdocs-rss-plugin` is enough.
+
 ## Usage
 
 Minimal [`mkdocs.yml` configuration](https://www.mkdocs.org/user-guide/configuration/#project-information):
@@ -96,11 +104,11 @@ python -m pip install -e .[dev]
 # including documentation dependencies
 python -m pip install -e .[docs]
 
-# including testing dependencies
-python -m pip install -e .[test]
+# including testing dependencies, with one documentation generator (mkdocs or properdocs)
+python -m pip install -e .[test,mkdocs]
 
 # all inclusive
-python -m pip install -e .[dev,docs,test]
+python -m pip install -e .[dev,docs,test,mkdocs]
 
 # install git hooks
 pre-commit install
diff --git a/pyproject.toml b/pyproject.toml
index c247faa..4ac03d6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,8 +42,6 @@ classifiers = [
 dependencies = [
     "CacheControl[filecache]>=0.14.3,<1",
     "GitPython>=3.2.1,<3.3",
-    "mkdocs==1.6.1",
-    "properdocs >=1.6.5,<2",
     "requests>=2.32.5,<3",
     "tzdata>=2024,<2027 ; sys_platform == 'win32'",
 ]
@@ -59,6 +57,7 @@ dev = [
     "Flake8-pyproject>=1.2.3",
     "pre-commit>=4,<5",
 ]
+
 docs = [
     "mkdocs-git-committers-plugin-2>=2.4.1,<2.6",
     "mkdocs-git-revision-date-localized-plugin>=1.3,<1.7",
@@ -67,6 +66,11 @@ docs = [
     "mkdocstrings-python>=1.16.2,<2.1",
     "termynal>=0.12.2,<0.15",
 ]
+
+mkdocs = ["mkdocs>=1.6.1,<2"]
+
+properdocs = ["properdocs>=1.6.7,<2"]
+
 test = [
     "feedparser>=6.0.12,<6.1",
     "jsonfeed-util>=1.2,<2",
@@ -103,7 +107,7 @@ exclude_also = [
     # Don't complain about missing debug-only code:
     "def __repr__",
     "if self.debug:",
-     # Don't complain if non-runnable code isn't run:
+    # Don't complain if non-runnable code isn't run:
     "if 0:",
     "if __name__ == .__main__.:",
     # Don't complain about imports for type checking: