diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f67d9999b..506b2deff 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,12 +15,12 @@ repos:
     hooks:
     -   id: doc8
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v3.1.0
+    rev: v3.2.0
     hooks:
     -   id: pyupgrade
         args: [--py37-plus]
 -   repo: https://github.com/adamchainz/django-upgrade
-    rev: 1.10.0
+    rev: 1.11.0
     hooks:
     -   id: django-upgrade
         args: [--target-version, "3.2"]
@@ -38,14 +38,14 @@ repos:
     -   id: rst-backticks
     -   id: rst-directive-colons
 -   repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v3.0.0-alpha.2
+    rev: v3.0.0-alpha.4
     hooks:
     -   id: prettier
         types_or: [javascript, css]
         args:
         -  --trailing-comma=es5
 -   repo: https://github.com/pre-commit/mirrors-eslint
-    rev: v8.25.0
+    rev: v8.26.0
     hooks:
     -   id: eslint
         files: \.js?$
diff --git a/debug_toolbar/panels/history/panel.py b/debug_toolbar/panels/history/panel.py
index 2e637083a..8bd0e8f65 100644
--- a/debug_toolbar/panels/history/panel.py
+++ b/debug_toolbar/panels/history/panel.py
@@ -60,7 +60,7 @@ def generate_stats(self, request, response):
             if (
                 not data
                 and request.body
-                and request.META.get("CONTENT_TYPE") == "application/json"
+                and request.headers.get("content-type") == "application/json"
             ):
                 try:
                     data = json.loads(request.body)