projen: projen fails when creating new projects

I try to create a new AWS CDK project with projen new awscdk-app-ts. This works but projen fails afterwards with this error every time I run it:

$ projen
👾 default | node .projenrc.js
/home/username/myproject/.projenrc.js:2
const project = new AwsCdkTypeScriptApp({
                ^

TypeError: AwsCdkTypeScriptApp is not a constructor
    at Object.<anonymous> (/home/username/myproject/.projenrc.js:2:17)
    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:17:47
👾 Synthesis failed: Task "default" failed when executing "node .projenrc.js" (cwd: /home/username/myproject)