diff --git a/library/core/src/autodiff.md b/library/core/src/autodiff.md
index f15d4d348c17..847ed8b3ef32 100644
--- a/library/core/src/autodiff.md
+++ b/library/core/src/autodiff.md
@@ -150,4 +150,8 @@ fn main() {
 }
 ```
 
+## Current limitations:
 
+- Differentiating a function which accepts a `dyn Trait` is currently not supported.
+- Builds without `lto="fat"` are not yet supported.
+- Builds in debug mode are currently more likely to fail compilation.