diff --git a/antsibull-nox.toml b/antsibull-nox.toml
index 76e8947a02..1d64a3c79a 100644
--- a/antsibull-nox.toml
+++ b/antsibull-nox.toml
@@ -16,6 +16,20 @@
 
 [sessions.docs_check]
 validate_collection_refs="all"
+codeblocks_restrict_types = [
+    "ansible-output",
+    "console",
+    "ini",
+    "json",
+    "python",
+    "shell",
+    "yaml",
+    "yaml+jinja",
+    "text",
+]
+codeblocks_restrict_type_exact_case = true
+codeblocks_allow_without_type = false
+codeblocks_allow_literal_blocks = false
 
 [sessions.license_check]