diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1885a3c0..f6b207d9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,11 +1,11 @@
 ---
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.5.0
+    rev: v6.0.0
     hooks:
       - id: check-merge-conflict
-  - repo: https://github.com/prettier/prettier
-    rev: 2.0.5
+  - repo: https://github.com/mirrors-prettier/mirrors-prettier
+    rev: v3.9.6
     hooks:
       - id: prettier
         types: [json,yaml]
diff --git a/schemas/styles/csl.sch b/schemas/styles/csl.sch
index f3eab55f..d753efd3 100644
--- a/schemas/styles/csl.sch
+++ b/schemas/styles/csl.sch
@@ -11,5 +11,8 @@
     <sch:rule context="/cs:style/cs:macro">
       <sch:assert test="count(/cs:style/cs:macro/@name[. = current()/@name]) = 1">This macro does not have a unique name.</sch:assert>
     </sch:rule>
+    <sch:rule context="*[@et-al-min]">
+      <sch:assert test="number(current()/@et-al-min) gt number(current()/@et-al-use-first)">et-al-min must be greater than et-al-use-first.</sch:assert>
+    </sch:rule>
   </sch:pattern>
 </sch:schema>