diff --git a/pyproject.toml b/pyproject.toml
index 0c4905f..80e7810 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,8 +19,8 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 dependencies = [
-    "lxml==4.9.3",
-    "lxml-stubs==0.4.0",
+    "lxml==5.1.0",
+    "lxml-stubs==0.5.1",
     "termcolor==2.4.0",
     "pyhumps==3.8.0",
 ]
@@ -31,7 +31,7 @@ dependencies = [
 "Source" = "https://github.com/OliverKillane/xmlable"
 
 [project.optional-dependencies]
-dev = ["black==23.11.0", "mypy==1.7.1", "pytest==7.4.3"]
+dev = ["black==24.2.0", "mypy==1.8.0", "pytest==8.0.1"]
 
 [tool.pytest.ini_options]
 minversion = "6.0"