diff --git a/docs/internals/contributing/writing-code/unit-tests.txt b/docs/internals/contributing/writing-code/unit-tests.txt
index f304970a29..657027a033 100644
--- a/docs/internals/contributing/writing-code/unit-tests.txt
+++ b/docs/internals/contributing/writing-code/unit-tests.txt
@@ -85,7 +85,7 @@ default environments can be seen as follows:
     docs
     isort>=7.0.0
     lint-docs
-    zizmor>=1.16.3
+    zizmor>=1.19.0
 
 Testing other Python versions and database backends
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/package.json b/package.json
index 86be20ce3a..a0ae4ad873 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "npm": ">=1.3.0"
   },
   "devDependencies": {
-    "eslint": "^9.36.0",
+    "eslint": "^9.39.1",
     "puppeteer": "^24.22.0",
     "grunt": "^1.6.1",
     "grunt-cli": "^1.5.0",
diff --git a/tests/requirements/py3.txt b/tests/requirements/py3.txt
index e07f97ef69..5efe491430 100644
--- a/tests/requirements/py3.txt
+++ b/tests/requirements/py3.txt
@@ -2,7 +2,7 @@ aiosmtpd >= 1.4.5
 asgiref >= 3.9.1
 argon2-cffi >= 23.1.0
 bcrypt >= 4.1.1
-black >= 25.9.0
+black >= 25.12.0
 docutils >= 0.22
 geoip2 >= 4.8.0
 jinja2 >= 2.11.0
diff --git a/tox.ini b/tox.ini
index 9888bff0b8..31f374abe3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -103,7 +103,7 @@ commands =
 [testenv:zizmor]
 basepython = python3
 usedevelop = false
-deps = zizmor >= 1.16.3
+deps = zizmor >= 1.19.0
 changedir = {toxinidir}
 commands =
     zizmor .