diff --git a/.changeset/renovate-29506de.md b/.changeset/renovate-29506de.md
new file mode 100644
index 0000000000..1260f3b453
--- /dev/null
+++ b/.changeset/renovate-29506de.md
@@ -0,0 +1,5 @@
+---
+'@backstage/repo-tools': patch
+---
+
+Updated dependency `typedoc` to `^0.28.0`.
diff --git a/package.json b/package.json
index b5d88d947b..4e1cf77fff 100644
--- a/package.json
+++ b/package.json
@@ -150,7 +150,7 @@
     "shx": "^0.3.2",
     "sloc": "^0.3.1",
     "sort-package-json": "^2.8.0",
-    "typedoc": "^0.27.6",
+    "typedoc": "^0.28.0",
     "typescript": "~5.6.0"
   },
   "packageManager": "yarn@4.8.1",
diff --git a/packages/repo-tools/package.json b/packages/repo-tools/package.json
index 1ec1d1a48f..77783ff1dc 100644
--- a/packages/repo-tools/package.json
+++ b/packages/repo-tools/package.json
@@ -90,7 +90,7 @@
     "@types/is-glob": "^4.0.2",
     "@types/node": "^20.16.0",
     "@types/prettier": "^2.0.0",
-    "typedoc": "^0.27.6"
+    "typedoc": "^0.28.0"
   },
   "peerDependencies": {
     "@microsoft/api-extractor-model": "*",
@@ -98,7 +98,7 @@
     "@microsoft/tsdoc-config": "*",
     "@useoptic/optic": "^1.0.0",
     "prettier": "^2.8.1",
-    "typedoc": "^0.27.0",
+    "typedoc": "^0.28.0",
     "typescript": "> 3.0.0"
   },
   "peerDependenciesMeta": {
diff --git a/yarn.lock b/yarn.lock
index 98518c53d6..9caa909c47 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8943,7 +8943,7 @@ __metadata:
     portfinder: "npm:^1.0.32"
     tar: "npm:^6.1.12"
     ts-morph: "npm:^24.0.0"
-    typedoc: "npm:^0.27.6"
+    typedoc: "npm:^0.28.0"
     yaml-diff-patch: "npm:^2.0.0"
   peerDependencies:
     "@microsoft/api-extractor-model": "*"
@@ -8951,7 +8951,7 @@ __metadata:
     "@microsoft/tsdoc-config": "*"
     "@useoptic/optic": ^1.0.0
     prettier: ^2.8.1
-    typedoc: ^0.27.0
+    typedoc: ^0.28.0
     typescript: "> 3.0.0"
   peerDependenciesMeta:
     prettier:
@@ -10329,14 +10329,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@gerrit0/mini-shiki@npm:^1.24.0":
-  version: 1.27.2
-  resolution: "@gerrit0/mini-shiki@npm:1.27.2"
+"@gerrit0/mini-shiki@npm:^3.2.2":
+  version: 3.4.0
+  resolution: "@gerrit0/mini-shiki@npm:3.4.0"
   dependencies:
-    "@shikijs/engine-oniguruma": "npm:^1.27.2"
-    "@shikijs/types": "npm:^1.27.2"
-    "@shikijs/vscode-textmate": "npm:^10.0.1"
-  checksum: 10/ee4c80d94da587bd0dfe262f92ce81be0a1aa86dd0ef88e708839751af552451dd113f139b556be4f18747bf883d81ee85a119e535852114a71efda1cb3c5be5
+    "@shikijs/engine-oniguruma": "npm:^3.4.0"
+    "@shikijs/langs": "npm:^3.4.0"
+    "@shikijs/themes": "npm:^3.4.0"
+    "@shikijs/types": "npm:^3.4.0"
+    "@shikijs/vscode-textmate": "npm:^10.0.2"
+  checksum: 10/2e116b8a6cb4d63db0fc8d96ba696befb4b4d66d4eaf4673c2585e798ae871e7e7cc581252cdc08169e5c19ae1aa496d93286da7626a36f7b0d298c660178855
   languageName: node
   linkType: hard
 
@@ -16895,30 +16897,48 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@shikijs/engine-oniguruma@npm:^1.27.2":
-  version: 1.29.2
-  resolution: "@shikijs/engine-oniguruma@npm:1.29.2"
+"@shikijs/engine-oniguruma@npm:^3.4.0":
+  version: 3.4.0
+  resolution: "@shikijs/engine-oniguruma@npm:3.4.0"
   dependencies:
-    "@shikijs/types": "npm:1.29.2"
-    "@shikijs/vscode-textmate": "npm:^10.0.1"
-  checksum: 10/bb3e2c01da84d573251ebc289b1ecf815261024dea5bddb93ad56c3504a71cde3630db070be401ed3bbcd23a8a839ec78984a82317f9c9d0bba58daed935b781
+    "@shikijs/types": "npm:3.4.0"
+    "@shikijs/vscode-textmate": "npm:^10.0.2"
+  checksum: 10/3f6c33a1f49e6a8235b79029e3e95f0bc95398f299e53b96a23942ceb4648be51071f48b8632e2f244b2b2477d152035fd18bc4b7e34abe885d84e94698f7e94
   languageName: node
   linkType: hard
 
-"@shikijs/types@npm:1.29.2, @shikijs/types@npm:^1.27.2":
-  version: 1.29.2
-  resolution: "@shikijs/types@npm:1.29.2"
+"@shikijs/langs@npm:^3.4.0":
+  version: 3.4.0
+  resolution: "@shikijs/langs@npm:3.4.0"
   dependencies:
-    "@shikijs/vscode-textmate": "npm:^10.0.1"
+    "@shikijs/types": "npm:3.4.0"
+  checksum: 10/355065accab578a8a017ee238f13ee0b6adf007b514f78d7ea126f07ee89cd682f1f377f49d923688c6787b474b5b3a640aa3b083ac11ea11ea4edd7e8c50ac7
+  languageName: node
+  linkType: hard
+
+"@shikijs/themes@npm:^3.4.0":
+  version: 3.4.0
+  resolution: "@shikijs/themes@npm:3.4.0"
+  dependencies:
+    "@shikijs/types": "npm:3.4.0"
+  checksum: 10/74e5911548d77a63375125575db77dd62b44c40afd39f168bc3fc4d7fefb4d2922f49cf76d21139d850a02a5e207659a247a417be27b438d3d5ea80abe450e52
+  languageName: node
+  linkType: hard
+
+"@shikijs/types@npm:3.4.0, @shikijs/types@npm:^3.4.0":
+  version: 3.4.0
+  resolution: "@shikijs/types@npm:3.4.0"
+  dependencies:
+    "@shikijs/vscode-textmate": "npm:^10.0.2"
     "@types/hast": "npm:^3.0.4"
-  checksum: 10/579e64b6e8cb83023232b8060b08f51cff3909b199d0d1a0c58ed500c898dd34b74bf0457336fa2e6bee1005889e198d7d924347ad616eee30c6ae4c89a67ab8
+  checksum: 10/bca759ac0972f9ab673b199d44fb4655eb75a1af68b024f05126ff6ef0ce1fd7d316ca16da8eb7c383de8b058f358f90e6172be3783a1f04a3871f518fb0fd72
   languageName: node
   linkType: hard
 
-"@shikijs/vscode-textmate@npm:^10.0.1":
-  version: 10.0.1
-  resolution: "@shikijs/vscode-textmate@npm:10.0.1"
-  checksum: 10/8bb005efbf472a9cac19bb5fb0bb1a2b612e128122e5a9d7b2bb2af674c29912db0e59c547ec458e5333f8f7ac7a8f054a24cb653f11dc20951e299933b416e4
+"@shikijs/vscode-textmate@npm:^10.0.2":
+  version: 10.0.2
+  resolution: "@shikijs/vscode-textmate@npm:10.0.2"
+  checksum: 10/d924cba8a01cd9ca12f56ba097d628fdb81455abb85884c8d8a5ae85b628a37dd5907e7691019b97107bd6608c866adf91ba04a1c3bba391281c88e386c044ea
   languageName: node
   linkType: hard
 
@@ -43913,7 +43933,7 @@ __metadata:
     shx: "npm:^0.3.2"
     sloc: "npm:^0.3.1"
     sort-package-json: "npm:^2.8.0"
-    typedoc: "npm:^0.27.6"
+    typedoc: "npm:^0.28.0"
     typescript: "npm:~5.6.0"
     yaml: "npm:^2.7.0"
   languageName: unknown
@@ -47219,20 +47239,20 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typedoc@npm:^0.27.6":
-  version: 0.27.9
-  resolution: "typedoc@npm:0.27.9"
+"typedoc@npm:^0.28.0":
+  version: 0.28.4
+  resolution: "typedoc@npm:0.28.4"
   dependencies:
-    "@gerrit0/mini-shiki": "npm:^1.24.0"
+    "@gerrit0/mini-shiki": "npm:^3.2.2"
     lunr: "npm:^2.3.9"
     markdown-it: "npm:^14.1.0"
     minimatch: "npm:^9.0.5"
-    yaml: "npm:^2.6.1"
+    yaml: "npm:^2.7.1"
   peerDependencies:
     typescript: 5.0.x || 5.1.x || 5.2.x || 5.3.x || 5.4.x || 5.5.x || 5.6.x || 5.7.x || 5.8.x
   bin:
     typedoc: bin/typedoc
-  checksum: 10/fb1e4b54849cad1628543fb24863358320b737aabba83194562360cfbcaac8684b2b18824fd623bb27a9e8dbbc0e01c0b88fedd9a642d78e7a3c108387e44d25
+  checksum: 10/0ccab46519e4be1aa9bd4defd55e920cbefe8825e0ba7ca93b8d6fd3867300e8b60260d2182033b46121f9040251366f6a496a3500da458c3031b224d7bdadd7
   languageName: node
   linkType: hard
 
@@ -49102,7 +49122,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"yaml@npm:^2.0.0, yaml@npm:^2.0.0-10, yaml@npm:^2.1.1, yaml@npm:^2.2.1, yaml@npm:^2.2.2, yaml@npm:^2.3.2, yaml@npm:^2.3.3, yaml@npm:^2.3.4, yaml@npm:^2.6.1, yaml@npm:^2.7.0":
+"yaml@npm:^2.0.0, yaml@npm:^2.0.0-10, yaml@npm:^2.1.1, yaml@npm:^2.2.1, yaml@npm:^2.2.2, yaml@npm:^2.3.2, yaml@npm:^2.3.3, yaml@npm:^2.3.4, yaml@npm:^2.7.0, yaml@npm:^2.7.1":
   version: 2.7.1
   resolution: "yaml@npm:2.7.1"
   bin: