diff --git a/Cargo.lock b/Cargo.lock
index e5400f5ebd..118cf137e2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1067,7 +1067,6 @@ dependencies = [
  "rustc-hash",
  "superslice",
  "test_utils",
- "unicase",
 ]
 
 [[package]]
@@ -1094,7 +1093,6 @@ dependencies = [
  "rustc-hash",
  "superslice",
  "test_utils",
- "unicase",
 ]
 
 [[package]]
@@ -1605,15 +1603,6 @@ dependencies = [
  "num_cpus",
 ]
 
-[[package]]
-name = "unicase"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
-dependencies = [
- "version_check",
-]
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.4"
@@ -1656,12 +1645,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "version_check"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
-
 [[package]]
 name = "walkdir"
 version = "2.3.1"
diff --git a/crates/ra_ide/Cargo.toml b/crates/ra_ide/Cargo.toml
index 3407d25989..6a3112f9c6 100644
--- a/crates/ra_ide/Cargo.toml
+++ b/crates/ra_ide/Cargo.toml
@@ -20,7 +20,6 @@ log = "0.4.8"
 rayon = "1.3.0"
 fst = { version = "0.3.5", default-features = false }
 rustc-hash = "1.1.0"
-unicase = "2.6.0"
 superslice = "1.0.0"
 rand = { version = "0.7.3", features = ["small_rng"] }
 once_cell = "1.3.1"
diff --git a/crates/ra_ide_db/Cargo.toml b/crates/ra_ide_db/Cargo.toml
index ee409e34e9..2f5b74b929 100644
--- a/crates/ra_ide_db/Cargo.toml
+++ b/crates/ra_ide_db/Cargo.toml
@@ -20,7 +20,6 @@ log = "0.4.8"
 rayon = "1.3.0"
 fst = { version = "0.3.5", default-features = false }
 rustc-hash = "1.1.0"
-unicase = "2.6.0"
 superslice = "1.0.0"
 once_cell = "1.3.1"