diff --git a/README.md b/README.md
index 21c30e1775..8e0d54c5f1 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ A complete Android `build.gradle` example is [here](https://gist.github.com/msri
 
 #### Annotation Processors / Generated Code
 
-Some annotation processors like [Dagger](https://google.github.io/dagger/) and [AutoValue](https://github.com/google/auto/tree/master/value) generate code into the same package namespace as your own code.  This can cause problems when setting NullAway to the `ERROR` level as suggested above, since errors in this generated code will block the build.  Currently the best solution to this problem is to completely disable Error Prone on generated code, using the `-XepExcludedPaths` option added in Error Prone 2.13 (documented [here](http://errorprone.info/docs/flags), use `options.errorprone.excludedPaths=` in Gradle).  To use, figure out which directory contains the generated code, and add that directory to the excluded path regex.
+Some annotation processors like [Dagger](https://google.github.io/dagger/) and [AutoValue](https://github.com/google/auto/tree/master/value) generate code into the same package namespace as your own code.  This can cause problems when setting NullAway to the `ERROR` level as suggested above, since errors in this generated code will block the build.  Currently the best solution to this problem is to completely disable Error Prone on generated code, using the `-XepExcludedPaths` option added in Error Prone 2.1.3 (documented [here](http://errorprone.info/docs/flags), use `options.errorprone.excludedPaths=` in Gradle).  To use, figure out which directory contains the generated code, and add that directory to the excluded path regex.
 
 **Note for Dagger users**: Dagger versions older than 2.12 can have bad interactions with NullAway; see [here](https://github.com/uber/NullAway/issues/48#issuecomment-340018409).  Please update to Dagger 2.12 to fix the problem.