diff --git a/pyproject.toml b/pyproject.toml
index d80a0880..18edf203 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -73,7 +73,7 @@ python = "^3.9"
 cyclonedx-python-lib = { version = "^8.0 || ^9.0 || ^10 || ^11", extras = ["validation"] }
 packageurl-python = ">=0.11, <2"  # keep in sync with same dep in `cyclonedx-python-lib`
 pip-requirements-parser = "^32.0"
-packaging = "^22 || ^23 || ^24 || ^25"
+packaging = "^22 || ^23 || ^24 || ^25 || ^26"
 tomli = { version = "^2.0.1", python = "<3.11" }
 chardet = "^5.1"