diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 36ba56b..f0f792f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -50,6 +50,13 @@ jobs:
           - python: "3.11"
             env: py311-django41
 
+          - python: "3.9"
+            env: py39-django42
+          - python: "3.10"
+            env: py310-django42
+          - python: "3.11"
+            env: py311-django42
+
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python }}
@@ -59,7 +66,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install --upgrade pip
-          python -m pip install -e .
+          sh build.sh
           pip install tox tox-gh-actions
       - name: Run tests using tox
-        run: tox -e ${{ matrix.env }}
\ No newline at end of file
+        run: tox -e ${{ matrix.env }}
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..3d9f380
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+recursive-include src/django_mermaid/static/mermaid *
\ No newline at end of file
diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..fce52ab
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# last version of `build` supporting Python 3.6
+pip install build==0.9.0
+
+# build the wheel and install it
+WHEEL_NAME=$(python -m build | grep -Po "django_mermaid-.*\.whl" | tail -n 1)
+pip install dist/$WHEEL_NAME
\ No newline at end of file
diff --git a/tests/test_tag.py b/tests/test_tag.py
index 60170d3..0da99e1 100644
--- a/tests/test_tag.py
+++ b/tests/test_tag.py
@@ -1,4 +1,3 @@
-from os.path import dirname
 from os.path import exists
 from os.path import join
 
@@ -8,6 +7,15 @@
 from django.test import override_settings
 from django_mermaid.templatetags import DEFAULT_THEME
 
+try:
+    import site
+
+    site_packages = site.getsitepackages()[0]
+except (ImportError, IndexError):
+    import sysconfig
+
+    site_packages = sysconfig.get_paths()["purelib"]
+
 
 def test_tag_use_in_template(version):
     theme = getattr(settings, "MERMAID_THEME", DEFAULT_THEME)
@@ -63,6 +71,7 @@ def test_tag_use_custom_theme_variables_with_base_theme(version):
     )
 
 
-def test_tag_use_custom_version(version):
-    static_dir = join(dirname(__file__), "..", "src", "django_mermaid", "static")
-    assert exists(join(static_dir, "mermaid", version, "mermaid.js"))
+def test_tag_use_custom_version():
+    static_dir = join(site_packages, "django_mermaid", "static")
+    assert exists(join(static_dir, "mermaid", "8.6.3", "mermaid.js"))
+    assert exists(join(static_dir, "mermaid", "9.4.3", "mermaid.js"))
diff --git a/tox.ini b/tox.ini
index 1cbe5e0..41e3122 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,8 @@ envlist =
     py{36,38,39}-django21
     py{36,38,310}-django32
     py{38,39,310}-django40
-    py{39,310,311}-django{41,main}
+    py{39,310,311}-django{41,42}
+    py{310,311}-djangomain
 
 [testenv]
 deps =
@@ -16,6 +17,7 @@ deps =
     django21: django<2.2
     django11: django<2.0
     -r{toxinidir}/tests/requirements.txt
+allowlist_externals = sh
 commands =
-    pip install -e .
-    pytest
\ No newline at end of file
+    sh build.sh
+    pytest