diff --git a/src/nerdbank-streams/package.json b/src/nerdbank-streams/package.json
index 7c46ba54..e2508f14 100644
--- a/src/nerdbank-streams/package.json
+++ b/src/nerdbank-streams/package.json
@@ -48,7 +48,7 @@
     "gulp-typescript": "^6.0.0-alpha.1",
     "jest": "^29.5.0",
     "jshint": "^2.13.6",
-    "mkdirp": "^1.0.4",
+    "mkdirp": "^3.0.1",
     "nerdbank-gitversioning": "^3.6.133",
     "path": "^0.12.7",
     "prettier": "^3.0.0",
diff --git a/src/nerdbank-streams/yarn.lock b/src/nerdbank-streams/yarn.lock
index e543c112..b30f6ac2 100644
--- a/src/nerdbank-streams/yarn.lock
+++ b/src/nerdbank-streams/yarn.lock
@@ -4309,10 +4309,10 @@ mixin-deep@^1.2.0:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
-mkdirp@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
-  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
+mkdirp@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-3.0.1.tgz#e44e4c5607fb279c168241713cc6e0fea9adcb50"
+  integrity sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==
 
 ms@2.0.0:
   version "2.0.0"