diff --git a/packages/ngx-filesize-demo/package.json b/packages/ngx-filesize-demo/package.json
index a1ee772e..3e37ab20 100644
--- a/packages/ngx-filesize-demo/package.json
+++ b/packages/ngx-filesize-demo/package.json
@@ -33,6 +33,6 @@
     "karma-coverage": "^2.2.0",
     "karma-jasmine": "^5.1.0",
     "karma-jasmine-html-reporter": "^2.1.0",
-    "typescript": "~4.8.4"
+    "typescript": "~5.9.0"
   }
 }
diff --git a/packages/ngx-filesize/package.json b/packages/ngx-filesize/package.json
index 3fe2dfad..565f3f96 100644
--- a/packages/ngx-filesize/package.json
+++ b/packages/ngx-filesize/package.json
@@ -73,7 +73,7 @@
     "ng-packagr": "^14.2.1",
     "rxjs": "^7.8.0",
     "tslib": "^2.4.0",
-    "typescript": "~4.8.4",
+    "typescript": "~5.9.0",
     "zone.js": "~0.15.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index ba7d09e8..feb8c30a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8006,7 +8006,7 @@ __metadata:
     ngx-filesize: "workspace:*"
     rxjs: "npm:^7.8.0"
     tslib: "npm:^2.4.0"
-    typescript: "npm:~4.8.4"
+    typescript: "npm:~5.9.0"
     zone.js: "npm:~0.15.0"
   languageName: unknown
   linkType: soft
@@ -8048,7 +8048,7 @@ __metadata:
     ng-packagr: "npm:^14.2.1"
     rxjs: "npm:^7.8.0"
     tslib: "npm:^2.4.0"
-    typescript: "npm:~4.8.4"
+    typescript: "npm:~5.9.0"
     zone.js: "npm:~0.15.0"
   peerDependencies:
     "@angular/common": ">= 14.2.0 < 21.0.0"
@@ -10932,23 +10932,23 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:~4.8.4":
-  version: 4.8.4
-  resolution: "typescript@npm:4.8.4"
+"typescript@npm:~5.9.0":
+  version: 5.9.3
+  resolution: "typescript@npm:5.9.3"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10c0/663bf455b21ac024e719bb8c6a07bcaaa027a9943abfb58a694b59789e7d08578badb5556170267ad480e31786b8b4c8ab3c9c0e597d3b8df39af800e43c6ed5
+  checksum: 10c0/6bd7552ce39f97e711db5aa048f6f9995b53f1c52f7d8667c1abdc1700c68a76a308f579cd309ce6b53646deb4e9a1be7c813a93baaf0a28ccd536a30270e1c5
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A~4.8.4#optional!builtin<compat/typescript>":
-  version: 4.8.4
-  resolution: "typescript@patch:typescript@npm%3A4.8.4#optional!builtin<compat/typescript>::version=4.8.4&hash=1a91c8"
+"typescript@patch:typescript@npm%3A~5.9.0#optional!builtin<compat/typescript>":
+  version: 5.9.3
+  resolution: "typescript@patch:typescript@npm%3A5.9.3#optional!builtin<compat/typescript>::version=5.9.3&hash=5786d5"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10c0/eecab597a5a8c6e7f14804f1447cfce02e214e32c02efcfe5219c94290e3d572490e8a0d8033fd075ac429d35babf85182541a50c50bfb0c21df33c59fb9bf82
+  checksum: 10c0/ad09fdf7a756814dce65bc60c1657b40d44451346858eea230e10f2e95a289d9183b6e32e5c11e95acc0ccc214b4f36289dcad4bf1886b0adb84d711d336a430
   languageName: node
   linkType: hard