diff --git a/uv.lock b/uv.lock
index 0230272b7..01493fe25 100644
--- a/uv.lock
+++ b/uv.lock
@@ -109,6 +109,7 @@ pre-commit = [
     { name = "pytest-regressions" },
     { name = "pytest-rerunfailures" },
     { name = "pytest-timeout" },
+    { name = "pytest-xdist" },
     { name = "python-memcached" },
     { name = "seekpath" },
     { name = "spglib" },
@@ -144,6 +145,7 @@ tests = [
     { name = "pytest-regressions" },
     { name = "pytest-rerunfailures" },
     { name = "pytest-timeout" },
+    { name = "pytest-xdist" },
     { name = "sphinx" },
 ]
 tui = [
@@ -207,6 +209,7 @@ requires-dist = [
     { name = "pytest-regressions", marker = "extra == 'tests'", specifier = "~=2.2" },
     { name = "pytest-rerunfailures", marker = "extra == 'tests'", specifier = "~=12.0" },
     { name = "pytest-timeout", marker = "extra == 'tests'", specifier = "~=2.0" },
+    { name = "pytest-xdist", marker = "extra == 'tests'", specifier = "~=3.6" },
     { name = "python-memcached", marker = "extra == 'rest'", specifier = "~=1.59" },
     { name = "pytz", specifier = "~=2021.1" },
     { name = "pyyaml", specifier = "~=6.0" },
@@ -1134,6 +1137,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/02/cc/b7e31358aac6ed1ef2bb790a9746ac2c69bcb3c8588b41616914eb106eaf/exceptiongroup-1.2.2-py3-none-any.whl", hash = "sha256:3111b9d131c238bec2f8f516e123e14ba243563fb135d3fe885990585aa7795b", size = 16453 },
 ]
 
+[[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 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/43/09/2aea36ff60d16dd8879bdb2f5b3ee0ba8d08cbbdcdfe870e695ce3784385/execnet-2.1.1-py3-none-any.whl", hash = "sha256:26dee51f1b80cebd6d0ca8e74dd8745419761d3bef34163928cbebbdc4749fdc", size = 40612 },
+]
+
 [[package]]
 name = "executing"
 version = "2.1.0"
@@ -3555,6 +3567,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/03/27/14af9ef8321f5edc7527e47def2a21d8118c6f329a9342cc61387a0c0599/pytest_timeout-2.3.1-py3-none-any.whl", hash = "sha256:68188cb703edfc6a18fad98dc25a3c61e9f24d644b0b70f33af545219fc7813e", size = 14148 },
 ]
 
+[[package]]
+name = "pytest-xdist"
+version = "3.6.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "execnet" },
+    { name = "pytest" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/41/c4/3c310a19bc1f1e9ef50075582652673ef2bfc8cd62afef9585683821902f/pytest_xdist-3.6.1.tar.gz", hash = "sha256:ead156a4db231eec769737f57668ef58a2084a34b2e55c4a8fa20d861107300d", size = 84060 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/6d/82/1d96bf03ee4c0fdc3c0cbe61470070e659ca78dc0086fb88b66c185e2449/pytest_xdist-3.6.1-py3-none-any.whl", hash = "sha256:9ed4adfb68a016610848639bb7e02c9352d5d9f03d04809919e2dafc3be4cca7", size = 46108 },
+]
+
 [[package]]
 name = "python-dateutil"
 version = "2.9.0.post0"