diff --git a/pyproject.toml b/pyproject.toml
index d6ea9a1c..62a01a6f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ keywords = ['fleur', 'aiida', 'inpgen', 'workflows', 'flapw', 'juelich', 'dft',
 requires-python = ">=3.8"
 dependencies = [
             "aiida-core[atomic_tools]>=2.0.1,<3.0.0",
-            "lxml~=4.8",
+            "lxml>=4.8",
             "numpy~=1.16,>=1.16.4",
             "sympy",
             "masci-tools~=0.13",
@@ -62,7 +62,7 @@ pre-commit = [
     "pylint>=2.5",
     "mypy==0.990",
     "types-PyYAML",
-    "lxml-stubs~=0.4"
+    "lxml-stubs>=0.4"
     ]
 dev = [
     'bumpver'