diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 9b23e0194..c4eced062 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -33,4 +33,3 @@ jobs:
           fail_ci_if_error: true
           flags: suite.unit
           use_oidc: true
-          version: v10.3.0
diff --git a/.projenrc.ts b/.projenrc.ts
index 85201f6c9..e5491fe9f 100644
--- a/.projenrc.ts
+++ b/.projenrc.ts
@@ -92,7 +92,7 @@ const CLI_SDK_V3_RANGE = '^3';
 const defaultTsOptions: NonNullable<TypeScriptWorkspaceOptions['tsconfig']>['compilerOptions'] = {
   target: 'ES2020',
   module: 'commonjs',
-  lib: ['es2020', 'dom'],
+  lib: ['es2020'],
   incremental: true,
   esModuleInterop: false,
   skipLibCheck: true,
@@ -1586,6 +1586,7 @@ const integRunner = configureProject(
     tsconfig: {
       compilerOptions: {
         ...defaultTsOptions,
+        lib: ['es2020', 'dom'],
       },
     },
     jestOptions: jestOptionsForProject({
diff --git a/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.dev.json b/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.dev.json
index c23fc6c66..5bfbfa299 100644
--- a/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.dev.json
+++ b/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.json b/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.json
index 494d42c75..4fe81a0dd 100644
--- a/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.json
+++ b/packages/@aws-cdk/cdk-cli-wrapper/tsconfig.json
@@ -10,8 +10,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/cli-lib-alpha/tsconfig.dev.json b/packages/@aws-cdk/cli-lib-alpha/tsconfig.dev.json
index 1f69e055f..281fa13a8 100644
--- a/packages/@aws-cdk/cli-lib-alpha/tsconfig.dev.json
+++ b/packages/@aws-cdk/cli-lib-alpha/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/cli-plugin-contract/tsconfig.dev.json b/packages/@aws-cdk/cli-plugin-contract/tsconfig.dev.json
index c23fc6c66..5bfbfa299 100644
--- a/packages/@aws-cdk/cli-plugin-contract/tsconfig.dev.json
+++ b/packages/@aws-cdk/cli-plugin-contract/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/cli-plugin-contract/tsconfig.json b/packages/@aws-cdk/cli-plugin-contract/tsconfig.json
index 494d42c75..4fe81a0dd 100644
--- a/packages/@aws-cdk/cli-plugin-contract/tsconfig.json
+++ b/packages/@aws-cdk/cli-plugin-contract/tsconfig.json
@@ -10,8 +10,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/cloudformation-diff/tsconfig.dev.json b/packages/@aws-cdk/cloudformation-diff/tsconfig.dev.json
index c23fc6c66..5bfbfa299 100644
--- a/packages/@aws-cdk/cloudformation-diff/tsconfig.dev.json
+++ b/packages/@aws-cdk/cloudformation-diff/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/cloudformation-diff/tsconfig.json b/packages/@aws-cdk/cloudformation-diff/tsconfig.json
index 494d42c75..4fe81a0dd 100644
--- a/packages/@aws-cdk/cloudformation-diff/tsconfig.json
+++ b/packages/@aws-cdk/cloudformation-diff/tsconfig.json
@@ -10,8 +10,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/node-bundle/tsconfig.dev.json b/packages/@aws-cdk/node-bundle/tsconfig.dev.json
index 8c3d5c245..7d0394b1d 100644
--- a/packages/@aws-cdk/node-bundle/tsconfig.dev.json
+++ b/packages/@aws-cdk/node-bundle/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/node-bundle/tsconfig.json b/packages/@aws-cdk/node-bundle/tsconfig.json
index 1594d817e..15be92e41 100644
--- a/packages/@aws-cdk/node-bundle/tsconfig.json
+++ b/packages/@aws-cdk/node-bundle/tsconfig.json
@@ -10,8 +10,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/user-input-gen/tsconfig.dev.json b/packages/@aws-cdk/user-input-gen/tsconfig.dev.json
index c23fc6c66..5bfbfa299 100644
--- a/packages/@aws-cdk/user-input-gen/tsconfig.dev.json
+++ b/packages/@aws-cdk/user-input-gen/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/@aws-cdk/user-input-gen/tsconfig.json b/packages/@aws-cdk/user-input-gen/tsconfig.json
index 494d42c75..4fe81a0dd 100644
--- a/packages/@aws-cdk/user-input-gen/tsconfig.json
+++ b/packages/@aws-cdk/user-input-gen/tsconfig.json
@@ -10,8 +10,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/aws-cdk/lib/init-templates/app/typescript/tsconfig.json b/packages/aws-cdk/lib/init-templates/app/typescript/tsconfig.json
index aaa7dc510..fc44377a1 100644
--- a/packages/aws-cdk/lib/init-templates/app/typescript/tsconfig.json
+++ b/packages/aws-cdk/lib/init-templates/app/typescript/tsconfig.json
@@ -3,8 +3,7 @@
     "target": "ES2020",
     "module": "commonjs",
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "declaration": true,
     "strict": true,
diff --git a/packages/aws-cdk/lib/init-templates/lib/typescript/tsconfig.json b/packages/aws-cdk/lib/init-templates/lib/typescript/tsconfig.json
index 1fa2eb4d6..8ffead765 100644
--- a/packages/aws-cdk/lib/init-templates/lib/typescript/tsconfig.json
+++ b/packages/aws-cdk/lib/init-templates/lib/typescript/tsconfig.json
@@ -3,8 +3,7 @@
     "target": "ES2020",
     "module": "commonjs",
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "declaration": true,
     "strict": true,
diff --git a/packages/aws-cdk/lib/init-templates/sample-app/javascript/tsconfig.json b/packages/aws-cdk/lib/init-templates/sample-app/javascript/tsconfig.json
index 2d5ebd700..0662466bf 100644
--- a/packages/aws-cdk/lib/init-templates/sample-app/javascript/tsconfig.json
+++ b/packages/aws-cdk/lib/init-templates/sample-app/javascript/tsconfig.json
@@ -3,8 +3,7 @@
     "target": "ES2020",
     "module": "commonjs",
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "declaration": true,
     "strict": true,
diff --git a/packages/aws-cdk/lib/init-templates/sample-app/typescript/tsconfig.json b/packages/aws-cdk/lib/init-templates/sample-app/typescript/tsconfig.json
index aaa7dc510..fc44377a1 100644
--- a/packages/aws-cdk/lib/init-templates/sample-app/typescript/tsconfig.json
+++ b/packages/aws-cdk/lib/init-templates/sample-app/typescript/tsconfig.json
@@ -3,8 +3,7 @@
     "target": "ES2020",
     "module": "commonjs",
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "declaration": true,
     "strict": true,
diff --git a/packages/cdk-assets/tsconfig.dev.json b/packages/cdk-assets/tsconfig.dev.json
index 1ba62e8ab..995dbdb33 100644
--- a/packages/cdk-assets/tsconfig.dev.json
+++ b/packages/cdk-assets/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/cdk-assets/tsconfig.json b/packages/cdk-assets/tsconfig.json
index af6bda986..82b289830 100644
--- a/packages/cdk-assets/tsconfig.json
+++ b/packages/cdk-assets/tsconfig.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/cdk/tsconfig.dev.json b/packages/cdk/tsconfig.dev.json
index 9eb0f3669..920e1daa4 100644
--- a/packages/cdk/tsconfig.dev.json
+++ b/packages/cdk/tsconfig.dev.json
@@ -8,8 +8,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/packages/cdk/tsconfig.json b/packages/cdk/tsconfig.json
index 840a614ff..69301288c 100644
--- a/packages/cdk/tsconfig.json
+++ b/packages/cdk/tsconfig.json
@@ -10,8 +10,7 @@
     "inlineSourceMap": true,
     "inlineSources": true,
     "lib": [
-      "es2020",
-      "dom"
+      "es2020"
     ],
     "module": "commonjs",
     "noEmitOnError": false,
diff --git a/projenrc/codecov.ts b/projenrc/codecov.ts
index 80c680fb7..3458b1eba 100644
--- a/projenrc/codecov.ts
+++ b/projenrc/codecov.ts
@@ -54,15 +54,6 @@ export class CodeCovWorkflow extends Component {
             fail_ci_if_error: true,
             flags: 'suite.unit',
             use_oidc: true,
-
-            // Version of CodeCov CLI to download and run.
-            //
-            // 'latest' if this is omitted, but we're seeing v10.4.0 producing the following error:
-            // ```
-            // -> Token of length 0 detected
-            // error - 2025-04-08 13:34:06,401 -- Upload failed: {"message":"Token required because branch is protected"}
-            // ```
-            version: 'v10.3.0',
           },
         },
       ],