diff --git a/pyproject.toml b/pyproject.toml
index 48532593..5c736dfd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -99,15 +99,16 @@ rendercv = 'rendercv.cli:app'
 # Virtual Environment Dependencies:
 [dependency-groups]
 dev = [
-    'ruff>=0.14.1',        # Lint and format the code
-    'black>=25.9.0',       # Format the code
-    'pyright>=1.1.406',    # Type checking
-    'pre-commit>=4.3.0',   # Run checks before committing
-    'pytest>=8.4.2',       # Run tests
-    'coverage>=7.11.0',    # Generate coverage reports
-    'pypdf>=6.1.3',        # Read PDF files
-    'snakeviz>=2.2.2',     # Profiling
+    'ruff>=0.14.1', # Lint and format the code
+    'black>=25.9.0', # Format the code
+    'pyright>=1.1.406', # Type checking
+    'pre-commit>=4.3.0', # Run checks before committing
+    'pytest>=8.4.2', # Run tests
+    'coverage>=7.11.0', # Generate coverage reports
+    'pypdf>=6.1.3', # Read PDF files
+    'snakeviz>=2.2.2', # Profiling
     'pyinstaller>=6.16.0', # Build executables
+    "pytest-xdist>=3.8.0",
 ]
 docs = [
     'mkdocs-material>=9.6.20',
@@ -200,10 +201,11 @@ exclude_lines = ['if __name__ == .__main__.:']
 log_cli_level = 'INFO'
 xfail_strict = true
 addopts = [
-    '-ra',              # Show extra test summary info
-    '-v',               # Increase verbosity
-    '--strict-markers', # Disallow unknown markers
-    '--strict-config',  # Fail on unknown config options
+    '-ra',                 # Show extra test summary info
+    '-v',                  # Increase verbosity
+    '--strict-markers',    # Disallow unknown markers
+    '--strict-config',     # Fail on unknown config options
+    '--numprocesses=auto', # Number of processes in parallel
 ]
 testpaths = ['tests']
 
diff --git a/uv.lock b/uv.lock
index a0d8e040..6471450b 100644
--- a/uv.lock
+++ b/uv.lock
@@ -348,6 +348,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/36/f4/c6e662dade71f56cd2f3735141b265c3c79293c109549c1e6933b0651ffc/exceptiongroup-1.3.0-py3-none-any.whl", hash = "sha256:4d111e6e0c13d0644cad6ddaa7ed0261a0b36971f6d23e7ec9b4b9097da78a10", size = 16674, upload-time = "2025-05-10T17:42:49.33Z" },
 ]
 
+[[package]]
+name = "execnet"
+version = "2.1.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/bb/ff/b4c0dc78fbe20c3e59c0c7334de0c27eb4001a2b2017999af398bf730817/execnet-2.1.1.tar.gz", hash = "sha256:5189b52c6121c24feae288166ab41b32549c7e2348652736540b9e6e7d4e72e3", size = 166524, upload-time = "2024-04-08T09:04:19.245Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/43/09/2aea36ff60d16dd8879bdb2f5b3ee0ba8d08cbbdcdfe870e695ce3784385/execnet-2.1.1-py3-none-any.whl", hash = "sha256:26dee51f1b80cebd6d0ca8e74dd8745419761d3bef34163928cbebbdc4749fdc", size = 40612, upload-time = "2024-04-08T09:04:17.414Z" },
+]
+
 [[package]]
 name = "filelock"
 version = "3.20.0"
@@ -1186,6 +1195,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/a8/a4/20da314d277121d6534b3a980b29035dcd51e6744bd79075a6ce8fa4eb8d/pytest-8.4.2-py3-none-any.whl", hash = "sha256:872f880de3fc3a5bdc88a11b39c9710c3497a547cfa9320bc3c5e62fbf272e79", size = 365750, upload-time = "2025-09-04T14:34:20.226Z" },
 ]
 
+[[package]]
+name = "pytest-xdist"
+version = "3.8.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "execnet" },
+    { name = "pytest" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/78/b4/439b179d1ff526791eb921115fca8e44e596a13efeda518b9d845a619450/pytest_xdist-3.8.0.tar.gz", hash = "sha256:7e578125ec9bc6050861aa93f2d59f1d8d085595d6551c2c90b6f4fad8d3a9f1", size = 88069, upload-time = "2025-07-01T13:30:59.346Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/ca/31/d4e37e9e550c2b92a9cbc2e4d0b7420a27224968580b5a447f420847c975/pytest_xdist-3.8.0-py3-none-any.whl", hash = "sha256:202ca578cfeb7370784a8c33d6d05bc6e13b4f25b5053c30a152269fd10f0b88", size = 46396, upload-time = "2025-07-01T13:30:56.632Z" },
+]
+
 [[package]]
 name = "python-dateutil"
 version = "2.9.0.post0"
@@ -1325,6 +1347,7 @@ dev = [
     { name = "pypdf" },
     { name = "pyright" },
     { name = "pytest" },
+    { name = "pytest-xdist" },
     { name = "ruff" },
     { name = "snakeviz" },
 ]
@@ -1367,6 +1390,7 @@ dev = [
     { name = "pypdf", specifier = ">=6.1.3" },
     { name = "pyright", specifier = ">=1.1.406" },
     { name = "pytest", specifier = ">=8.4.2" },
+    { name = "pytest-xdist", specifier = ">=3.8.0" },
     { name = "ruff", specifier = ">=0.14.1" },
     { name = "snakeviz", specifier = ">=2.2.2" },
 ]