diff --git a/package.json b/package.json
index 0127ecb..86cf900 100644
--- a/package.json
+++ b/package.json
@@ -41,10 +41,10 @@
   "homepage": "https://github.com/stencila/logga#readme",
   "devDependencies": {
     "@stencila/dev-config": "2.0.27",
-    "@types/jest": "26.0.24",
+    "@types/jest": "29.5.4",
     "jest": "26.6.3",
     "microbundle": "0.15.1",
-    "ts-jest": "26.5.6",
+    "ts-jest": "29.1.1",
     "typedoc": "0.23.15",
     "typescript": "4.8.3"
   },