diff --git a/packages/angular/cli/src/command-builder/utilities/schematic-workflow.ts b/packages/angular/cli/src/command-builder/utilities/schematic-workflow.ts
index c4134ef8ce66..8830454356ea 100644
--- a/packages/angular/cli/src/command-builder/utilities/schematic-workflow.ts
+++ b/packages/angular/cli/src/command-builder/utilities/schematic-workflow.ts
@@ -38,17 +38,11 @@ export function subscribeToWorkflow(
         );
         break;
       case 'update':
-        logs.push(
-          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
-          `${colors.cyan('UPDATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
-        );
+        logs.push(`${colors.cyan('UPDATE')} ${eventPath} (${event.content.byteLength} bytes)`);
         files.add(eventPath);
         break;
       case 'create':
-        logs.push(
-          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
-          `${colors.green('CREATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
-        );
+        logs.push(`${colors.green('CREATE')} ${eventPath} (${event.content.byteLength} bytes)`);
         files.add(eventPath);
         break;
       case 'delete':
diff --git a/packages/angular_devkit/schematics_cli/bin/schematics.ts b/packages/angular_devkit/schematics_cli/bin/schematics.ts
index 91a658d0ced8..f07e6a93e5ab 100644
--- a/packages/angular_devkit/schematics_cli/bin/schematics.ts
+++ b/packages/angular_devkit/schematics_cli/bin/schematics.ts
@@ -335,14 +335,12 @@ export async function main({
         break;
       case 'update':
         loggingQueue.push(
-          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
-          `${styleText(['cyan'], 'UPDATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
+          `${styleText(['cyan'], 'UPDATE')} ${eventPath} (${event.content.byteLength} bytes)`,
         );
         break;
       case 'create':
         loggingQueue.push(
-          // TODO: `as unknown` was necessary during TS 5.9 update. Figure out a long-term solution.
-          `${styleText(['green'], 'CREATE')} ${eventPath} (${(event.content as unknown as Buffer).length} bytes)`,
+          `${styleText(['green'], 'CREATE')} ${eventPath} (${event.content.byteLength} bytes)`,
         );
         break;
       case 'delete':