diff --git a/pyproject.toml b/pyproject.toml
index c56cf6d58d..35f7ee7246 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ classifiers = [
 ]
 dependencies = [
   "requests>=2.19.1",
-  "securesystemslib>=0.26.0",
+  "securesystemslib>=0.26.0,<0.32.0",
 ]
 dynamic = ["version"]