diff --git a/requirements-docs.in b/requirements-docs.in
index b7ba0d24..69834756 100644
--- a/requirements-docs.in
+++ b/requirements-docs.in
@@ -1,2 +1,4 @@
 mkdocstrings[python]~=1.0.4
-zensical~=0.0.53
+# zensical 0.0.71 rejects search fields over a size limit, which fails on
+# large docstrings such as GuardDuty's CreateFilterInput.finding_criteria.
+zensical>=0.0.53,<0.0.71
diff --git a/requirements-docs.txt b/requirements-docs.txt
index 5479a139..053da352 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -1,28 +1,28 @@
 # This file was autogenerated by uv via the following command:
 #    uv pip compile requirements-docs.in -o requirements-docs.txt
-click==8.4.2
+click==8.5.0
     # via
     #   mkdocs
     #   zensical
-deepmerge==2.1.0
+deepmerge==3.0.1
     # via zensical
 ghp-import==2.1.0
     # via mkdocs
-griffelib==2.1.0
+griffelib==2.3.2
     # via mkdocstrings-python
 jinja2==3.1.6
     # via
     #   mkdocs
     #   mkdocstrings
     #   zensical
-markdown==3.10.2
+markdown==3.11.1
     # via
     #   mkdocs
     #   mkdocs-autorefs
     #   mkdocstrings
     #   pymdown-extensions
     #   zensical
-markupsafe==3.0.3
+markupsafe==3.0.4
     # via
     #   jinja2
     #   mkdocs
@@ -42,21 +42,23 @@ mkdocs-autorefs==1.4.4
     #   mkdocstrings-python
 mkdocs-get-deps==0.2.2
     # via mkdocs
-mkdocstrings==1.0.6
+mkdocstrings==1.0.7
     # via
     #   -r requirements-docs.in
     #   mkdocstrings-python
-mkdocstrings-python==2.0.5
+mkdocstrings-python==2.0.9
     # via mkdocstrings
-packaging==26.2
+packaging==26.3
     # via mkdocs
 pathspec==1.1.1
-    # via mkdocs
-platformdirs==4.11.0
+    # via
+    #   mkdocs
+    #   zensical
+platformdirs==4.13.5
     # via mkdocs-get-deps
-pygments==2.20.0
+pygments==2.21.0
     # via zensical
-pymdown-extensions==11.0.1
+pymdown-extensions==12.3
     # via
     #   mkdocstrings
     #   zensical
@@ -73,9 +75,9 @@ pyyaml-env-tag==1.1
     # via mkdocs
 six==1.17.0
     # via python-dateutil
-tomli==2.4.1
+tomli==2.5.0
     # via zensical
 watchdog==6.0.0
     # via mkdocs
-zensical==0.0.53
+zensical==0.0.70
     # via -r requirements-docs.in