diff --git a/pyd3tn/pyproject.toml b/pyd3tn/pyproject.toml
index 9bd20a4..f3ea2fa 100644
--- a/pyd3tn/pyproject.toml
+++ b/pyd3tn/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools >= 62.5"]
+requires = ["setuptools >= 77.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -7,7 +7,7 @@ name = "pyD3TN"
 version = "0.15.0"
 description = "Collection of DTN protocol implementations"
 readme = "README.md"
-license = { text = "BSD-3-Clause OR Apache-2.0" }
+license-files = ["LICENSE"]
 authors = [
   {name = "D3TN GmbH", email = "contact@d3tn.com"},
 ]
diff --git a/python-ud3tn-utils/pyproject.toml b/python-ud3tn-utils/pyproject.toml
index f81f6ad..8bd39e9 100644
--- a/python-ud3tn-utils/pyproject.toml
+++ b/python-ud3tn-utils/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools >= 62.5"]
+requires = ["setuptools >= 77.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -7,7 +7,7 @@ name = "ud3tn-utils"
 version = "0.15.0"
 description = "μD3TN Utilities"
 readme = "README.md"
-license = { text = "BSD-3-Clause OR Apache-2.0" }
+license-files = ["LICENSE"]
 authors = [
   {name = "D3TN GmbH", email = "contact@d3tn.com"},
 ]