diff --git a/pyproject.toml b/pyproject.toml
index 57f7286f2221..561d55e2113e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ classifiers = [
 dependencies = [
     "colorama>=0.2.5,<0.4.7",
     "docutils>=0.10,<0.20",
-    "ruamel.yaml>=0.15.0,<=0.17.21",
+    "ruamel.yaml>=0.15.0,<=0.18.15",
     # ruamel.yaml only requires ruamel.yaml.clib for Python versions
     # less than or equal to Python 3.10. In order to ensure we have
     # a consistent dependency closure across all Python versions,
diff --git a/requirements-docs-lock.txt b/requirements-docs-lock.txt
index 57d6b8aedc25..98c1091d5aca 100644
--- a/requirements-docs-lock.txt
+++ b/requirements-docs-lock.txt
@@ -271,9 +271,9 @@ requests==2.32.4 \
     --hash=sha256:27babd3cda2a6d50b30443204ee89830707d396671944c998b5975b031ac2b2c \
     --hash=sha256:27d0316682c8a29834d3264820024b62a36942083d52caf2f14c0591336d3422
     # via sphinx
-ruamel-yaml==0.17.21 \
-    --hash=sha256:742b35d3d665023981bd6d16b3d24248ce5df75fdb4e2924e93a05c1f8b61ca7 \
-    --hash=sha256:8b7ce697a2f212752a35c1ac414471dc16c424c9573be4926b56ff3f5d23b7af
+ruamel-yaml==0.18.15 \
+    --hash=sha256:148f6488d698b7a5eded5ea793a025308b25eca97208181b6a026037f391f701 \
+    --hash=sha256:dbfca74b018c4c3fba0b9cc9ee33e53c371194a9000e694995e620490fd40700
     # via awscli (pyproject.toml)
 ruamel-yaml-clib==0.2.12 \
     --hash=sha256:040ae85536960525ea62868b642bdb0c2cc6021c9f9d507810c0c604e66f5a7b \