diff --git a/pyproject.toml b/pyproject.toml
index 50b6151..1632c7f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ hdlbuild = "hdlbuild.cli:main"
 
 [tool.poetry.dependencies]
 python = "^3.10"
-pyyaml = "5.4.1"
+pyyaml = "^5.4.1"
 doit = "^0.36.0"
 pydantic = "^2.11.3"
 rich = "^14.0.0"