diff --git a/pyproject.toml b/pyproject.toml
index cbfd820c..66a59508 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,10 +65,9 @@ keywords = [
 "Funding" = "https://owasp.org/donate/?reponame=www-project-cyclonedx&title=OWASP+CycloneDX"
 
 [tool.poetry.dependencies]
-# ATTENTION: keep `deps.lowest.r` file in sync
 python = "^3.8"
-packageurl-python = ">= 0.11"
-py-serializable =  "^0.16"
+packageurl-python = ">=0.11"
+py-serializable =  ">=0.16,<0.18"
 sortedcontainers = "^2.4.0"
 license-expression = "^30"
 jsonschema = { version = "^4.18", extras=['format'], optional=true }