rxjs-tslint-rules: Error: Cannot find 'rxjs.imports.ts' in the compiled program. Has it been imported?

I’m getting this error when running the linter:

Error: Cannot find '/path/to/app/src/rxjs.imports.ts' in the compiled program. Has it been imported?
    at Walker.findSourceFile (/path/to/app/node_modules/rxjs-tslint-rules/dist/rules/rxjsAddRule.js:136:15)
    at Walker.walkFile (/path/to/app/node_modules/rxjs-tslint-rules/dist/rules/rxjsAddRule.js:146:35)
    at Walker.onSourceFileEnd (/path/to/app/node_modules/rxjs-tslint-rules/dist/rules/rxjsAddRule.js:48:31)
    at Walker.AddedWalker.visitNode (/path/to/app/node_modules/rxjs-tslint-rules/dist/support/added-walker.js:41:18)
    at Walker.SyntaxWalker.walk (/path/to/app/node_modules/tslint/lib/language/walker/syntaxWalker.js:24:14)
    at Rule.AbstractRule.applyWithWalker (/path/to/app/node_modules/tslint/lib/language/rule/abstractRule.js:31:16)
    at Rule.applyWithProgram (/path/to/app/node_modules/rxjs-tslint-rules/dist/rules/rxjsAddRule.js:15:21)
    at Linter.applyRule (/path/to/app/node_modules/tslint/lib/linter.js:174:29)
    at /path/to/app/node_modules/tslint/lib/linter.js:119:85
    at Object.flatMap (/path/to/app/node_modules/tslint/lib/utils.js:151:29)

The linter found the errors though and I could fix the problems, but I’m still getting this. I have added the rxjs-add ruleset following the instructions in the README file and I’ve imported my rxjs.imports.ts file in main.ts, just like in the example code.