diff --git a/Formula/rust-analyzer.rb b/Formula/rust-analyzer.rb
index 83070826589115..824ada981c0604 100644
--- a/Formula/rust-analyzer.rb
+++ b/Formula/rust-analyzer.rb
@@ -19,6 +19,8 @@ class RustAnalyzer < Formula
 
   depends_on "rust" => :build
 
+  conflicts_with "rust", because: "both install `rust-analyzer` binary"
+
   def install
     cd "crates/rust-analyzer" do
       system "cargo", "install", "--bin", "rust-analyzer", *std_cargo_args
diff --git a/Formula/rust.rb b/Formula/rust.rb
index ac91b09aa83f8a..5d5bdcbb557916 100644
--- a/Formula/rust.rb
+++ b/Formula/rust.rb
@@ -42,6 +42,8 @@ class Rust < Formula
   uses_from_macos "curl"
   uses_from_macos "zlib"
 
+  conflicts_with "rust-analyzer", because: "both install `rust-analyzer` binary"
+
   resource "cargobootstrap" do
     on_macos do
       # From https://github.com/rust-lang/rust/blob/#{version}/src/stage0.json