diff --git a/antsibull-nox.toml b/antsibull-nox.toml
index 233da2ab..100fe921 100644
--- a/antsibull-nox.toml
+++ b/antsibull-nox.toml
@@ -32,6 +32,14 @@ mypy_extra_deps = [
 
 [sessions.docs_check]
 validate_collection_refs="all"
+codeblocks_restrict_types = [
+    "ansible-output",
+    "yaml",
+    "yaml+jinja",
+]
+codeblocks_restrict_type_exact_case = true
+codeblocks_allow_without_type = false
+codeblocks_allow_literal_blocks = false
 
 [sessions.license_check]
 run_reuse = true