diff --git a/.github/workflows/python_package.yml b/.github/workflows/python_package.yml
index f077135..d992ad7 100644
--- a/.github/workflows/python_package.yml
+++ b/.github/workflows/python_package.yml
@@ -28,14 +28,13 @@ jobs:
           distribution: 'zulu'
           java-version: ${{ matrix.java-version }}
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: ${{ matrix.python-version }}
       - name: Upgrade pip
         run: |
-          python3 -m pip install --upgrade pip
-          python3 -m pip install --upgrade build
-          python3 -m pip install .[tests] .[dev]
+          python3 -m pip install --upgrade pip==26.0 build==1.2.2
+          python3 -m pip install .[tests] .[dev] # NOSONAR - dynamic local package extras
       - name: Run flake8
         run: flake8 .
       - name: Run formatter
diff --git a/pyproject.toml b/pyproject.toml
index a13f575..19f8367 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.2", "jpy"]
+requires = ["setuptools>=61.2", "jpy==2.1.0", "build==1.2.1"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -19,28 +19,37 @@ classifiers = [
     "Development Status :: 5 - Production/Stable",
 ]
 dependencies = [
-"jpy",
+"jpy==2.1.0",
 ]
 
 [project.optional-dependencies]
 local = [
-  'flake8',
-  'black',
-  'isort',
-  'tox',
-  'pyyaml',
+   "flake8 == 7.1.1",
+   "black == 24.10.0",
+   "isort == 5.13.2",
+   "pyyaml == 6.0.3"
 ]
 tests = [
-  'coverage>=5.0.3',
-  'pytest',
-  'pytest-asyncio',
-  'pytest-cov',
-  'tox',
+  # ---- Python 3.9 Specific Pinned Versions ----
+    "coverage==7.4.4; python_version == '3.9'",
+    "pytest==8.3.4; python_version == '3.9'",
+    "pytest-asyncio==0.23.8; python_version == '3.9'",
+    "pytest-cov==5.0.0; python_version == '3.9'",
+    "tox==4.18.1; python_version == '3.9'",
+    "tox-gh-actions==3.2.0; python_version == '3.9'",
+
+    # ---- Fallbacks for Python 3.10 and Newer ----
+    "coverage==7.15.2; python_version > '3.9'",
+    "pytest==9.1.1; python_version > '3.9'",
+    "pytest-asyncio==1.4.0; python_version > '3.9'",
+    "pytest-cov==7.1.0; python_version > '3.9'",
+    "tox==4.57.0; python_version > '3.9'",
+    "tox-gh-actions==3.3.0; python_version > '3.9'"
 ]
 
 dev = [
-  "drools_jpy[local]",
-  "drools_jpy[tests]",
+  "drools_jpy[local] == 0.4.1",
+  "drools_jpy[tests] == 0.4.1"
 ]
 
 [project.urls]
@@ -60,6 +69,7 @@ legacy_tox_ini = """
 [tox]
 isolated_build = True
 envlist = py39,py310,py311,py312
+skip_missing_interpreters = true
 
 [gh-actions]
 python =
diff --git a/sonar-project.properties b/sonar-project.properties
new file mode 100644
index 0000000..6e9bfb6
--- /dev/null
+++ b/sonar-project.properties
@@ -0,0 +1,2 @@
+sonar.sca.pythonResolveLocal=true
+sonar.sca.enabled=false