diff --git a/Cargo.lock b/Cargo.lock
index 2e7698b59c..45c4de2b6f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -869,8 +869,8 @@ version = "0.1.0"
 name = "ra_assists"
 version = "0.1.0"
 dependencies = [
+ "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "format-buf 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "join_to_string 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ra_db 0.1.0",
  "ra_fmt 0.1.0",
@@ -1066,8 +1066,8 @@ name = "ra_lsp_server"
 version = "0.1.0"
 dependencies = [
  "crossbeam-channel 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "jod-thread 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "lsp-server 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/crates/ra_assists/Cargo.toml b/crates/ra_assists/Cargo.toml
index 50be8d9bc2..0d2109e4ed 100644
--- a/crates/ra_assists/Cargo.toml
+++ b/crates/ra_assists/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 format-buf = "1.0.0"
 join_to_string = "0.1.3"
 rustc-hash = "1.0"
-itertools = "0.8.0"
+either = "1.5"
 
 ra_syntax = { path = "../ra_syntax" }
 ra_text_edit = { path = "../ra_text_edit" }
diff --git a/crates/ra_assists/src/assist_ctx.rs b/crates/ra_assists/src/assist_ctx.rs
index e13f969c78..621b9feb2f 100644
--- a/crates/ra_assists/src/assist_ctx.rs
+++ b/crates/ra_assists/src/assist_ctx.rs
@@ -1,6 +1,6 @@
 //! This module defines `AssistCtx` -- the API surface that is exposed to assists.
+use either::Either;
 use hir::{db::HirDatabase, InFile, SourceAnalyzer};
-use itertools::Either;
 use ra_db::FileRange;
 use ra_fmt::{leading_indent, reindent};
 use ra_syntax::{
diff --git a/crates/ra_assists/src/lib.rs b/crates/ra_assists/src/lib.rs
index a2983ae87c..d45b589667 100644
--- a/crates/ra_assists/src/lib.rs
+++ b/crates/ra_assists/src/lib.rs
@@ -13,8 +13,8 @@ mod doc_tests;
 mod test_db;
 pub mod ast_transform;
 
+use either::Either;
 use hir::db::HirDatabase;
-use itertools::Either;
 use ra_db::FileRange;
 use ra_syntax::{TextRange, TextUnit};
 use ra_text_edit::TextEdit;
diff --git a/crates/ra_ide/src/assists.rs b/crates/ra_ide/src/assists.rs
index e30eee5f49..a936900da3 100644
--- a/crates/ra_ide/src/assists.rs
+++ b/crates/ra_ide/src/assists.rs
@@ -4,7 +4,7 @@ use ra_db::{FilePosition, FileRange};
 
 use crate::{db::RootDatabase, FileId, SourceChange, SourceFileEdit};
 
-use itertools::Either;
+use either::Either;
 pub use ra_assists::AssistId;
 use ra_assists::{AssistAction, AssistLabel};
 
diff --git a/crates/ra_lsp_server/Cargo.toml b/crates/ra_lsp_server/Cargo.toml
index 73bce8b086..579158780b 100644
--- a/crates/ra_lsp_server/Cargo.toml
+++ b/crates/ra_lsp_server/Cargo.toml
@@ -28,7 +28,7 @@ ra_prof = { path = "../ra_prof" }
 ra_vfs_glob = { path = "../ra_vfs_glob" }
 env_logger = { version = "0.7.1", default-features = false, features = ["humantime"] }
 ra_cargo_watch = { path = "../ra_cargo_watch" }
-itertools = "0.8"
+either = "1.5"
 
 [dev-dependencies]
 tempfile = "3"
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index d766394742..9e99648808 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -3,7 +3,7 @@
 
 use std::{fmt::Write as _, io::Write as _};
 
-use itertools::Either;
+use either::Either;
 use lsp_server::ErrorCode;
 use lsp_types::{
     CallHierarchyIncomingCall, CallHierarchyIncomingCallsParams, CallHierarchyItem,