diff --git a/src/official.md b/src/official.md
index 16547f4..ac91615 100644
--- a/src/official.md
+++ b/src/official.md
@@ -23,6 +23,7 @@ Advanced:
 
 Working groups:
 * [_Compiler team working groups_](https://rust-lang.github.io/compiler-team/working-groups/) - a list of working groups
+* [Const Generics Project Group](https://rust-lang.github.io/project-const-generics/index.html) - design and implementation of the const generics feature
 * [Standard library developers Guide](https://std-dev-guide.rust-lang.org/about.html)
 * [The Rust Language Design Team](https://lang-team.rust-lang.org/design_notes.html) - information related to the work of the lang team
 * [The Types Team](https://rust-lang.github.io/types-team/) - traits implementation improvements
@@ -30,6 +31,7 @@ Working groups:
 
 Other:
 * [Asynchronous Programming in Rust](https://rust-lang.github.io/async-book/) - non-blocking coroutines
+* [cargo-bisect-rustc](https://rust-lang.github.io/cargo-bisect-rustc/) - tool for automatically downloading and bisecting rustc artifacts and tests until it finds a given regression
 * [Clippy Documentation](https://doc.rust-lang.org/nightly/clippy/development/infrastructure/book.html) - code lints for programmers
 * [Criterion.rs](https://bheisler.github.io/criterion.rs/book/getting_started.html) - statistics-driven micro-benchmarking
 * [Error Codes Index](https://doc.rust-lang.org/stable/error_codes/error-index.html) - list of all error codes emitted from the Rust compiler 
@@ -38,4 +40,4 @@ Other:
 * [Rust API Guidelines](https://rust-lang.github.io/api-guidelines/) - how to design and present APIs
 * [Rust RFCs](https://rust-lang.github.io/rfcs/) - list of Requests For Comments for changes to Rust
 * [The Chalk Book](https://rust-lang.github.io/chalk/book/) - Rust's new trait system implementation
-* [The `bindgen` User Guide](https://rust-lang.github.io/rust-bindgen/) - automatically generates Rust FFI bindings to C and C++ libraries
+* [The `bindgen` User Guide](https://rust-lang.github.io/rust-bindgen/) - automatically generates Rust FFI bindings to C and C++ libraries
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