diff --git a/tools/pinning/current/pyproject.toml b/tools/pinning/current/pyproject.toml
index 9b6d257db..d46290910 100644
--- a/tools/pinning/current/pyproject.toml
+++ b/tools/pinning/current/pyproject.toml
@@ -41,10 +41,9 @@ letstest = {path = "../../../letstest"}
 # as a dependency here to ensure a version of cython is pinned for extra
 # stability.
 #
-# We also pin back cython as is currently required by pyyaml. See
-# https://github.com/yaml/pyyaml/pull/702 and
-# https://github.com/yaml/pyyaml/issues/601.
-cython = "<3.0"
+# As of pyyaml 6.0.2, cython >= 3.0 is required for py >= 3.13, and < 3.0 for py < 3.13.
+# So don't pin to a specific version, and let the resolver handle it.
+cython = "*"
 # setuptools-rust is a build dependency of cryptography, and since we don't have
 # a great way of pinning build dependencies, we simply list it here to ensure a
 # working version. Note: if build dependencies of setuptools-rust break at some