diff --git a/Cargo.lock b/Cargo.lock
index 1ac2dfe25c395..b52f2094584ce 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1232,7 +1232,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "jsonrpc-core"
-version = "9.0.0"
+version = "10.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1352,7 +1352,7 @@ dependencies = [
 
 [[package]]
 name = "lsp-codec"
-version = "0.1.0"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1362,7 +1362,7 @@ dependencies = [
 
 [[package]]
 name = "lsp-types"
-version = "0.54.0"
+version = "0.55.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2045,7 +2045,7 @@ dependencies = [
 
 [[package]]
 name = "racer"
-version = "2.1.16"
+version = "2.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2246,10 +2246,10 @@ dependencies = [
 
 [[package]]
 name = "rls"
-version = "1.31.6"
+version = "1.34.0"
 dependencies = [
  "cargo 0.35.0",
- "cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy_lints 0.0.212",
  "crossbeam-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2258,14 +2258,14 @@ dependencies = [
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "home 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 9.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 10.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lsp-codec 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lsp-types 0.54.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lsp-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lsp-types 0.55.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ordslice 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "racer 2.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "racer 2.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4040,7 +4040,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum jemalloc-sys 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "bfc62c8e50e381768ce8ee0428ee53741929f7ebd73e4d83f669bcf7693e00ae"
 "checksum jobserver 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "dd80e58f77e0cdea53ba96acc5e04479e5ffc5d869626a6beafe50fed867eace"
 "checksum json 0.11.13 (registry+https://github.com/rust-lang/crates.io-index)" = "9ad0485404155f45cce53a40d4b2d6ac356418300daed05273d9e26f91c390be"
-"checksum jsonrpc-core 9.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4e9cbeda300803d381390fb65e8158437728c39e6987ed23bee82728b73511a7"
+"checksum jsonrpc-core 10.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a5152c3fda235dfd68341b3edf4121bc4428642c93acbd6de88c26bf95fc5d7"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
@@ -4053,8 +4053,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum lock_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "949826a5ccf18c1b3a7c3d57692778d21768b79e46eb9dd07bfc4c2160036c54"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum log_settings 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "19af41f0565d7c19b2058153ad0b42d4d5ce89ec4dbf06ed6741114a8b63e7cd"
-"checksum lsp-codec 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9b29e3d1632fef13c1286b0b2f8545a7d894ae565a7fac013b90a17ee5bfbc91"
-"checksum lsp-types 0.54.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a252cc2be87d9329dd91c505a951996b3263582ba304870960faaae77b642183"
+"checksum lsp-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f3570f641b984e3e4613a1ca34db2ea72549bbc3c0316d33f5af91ab514dcbff"
+"checksum lsp-types 0.55.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3ca49aeb430780992121d582520170411658b1e41bf968b917d85fd0fb6da3c5"
 "checksum lzma-sys 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "d1eaa027402541975218bb0eec67d6b0412f6233af96e0d096d31dbdfd22e614"
 "checksum mac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
 "checksum macro-utils 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f2c4deaccc2ead6a28c16c0ba82f07d52b6475397415ce40876e559b0b0ea510"
@@ -4123,7 +4123,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 "checksum quote 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9949cfe66888ffe1d53e6ec9d9f3b70714083854be20fd5e271b232a017401e8"
 "checksum quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "53fa22a1994bd0f9372d7a816207d8a2677ad0325b073f5c5332760f0fb62b5c"
-"checksum racer 2.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "fbfcf2686b50f75a279cb42d9c6d253a1e68a475b415ea4baf7fb177ce94839a"
+"checksum racer 2.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "11db0de64c3eed7ee25f7b0af2109d296a67efa1efe7566ed17cc01115f961c8"
 "checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
 "checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
 "checksum rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ae9d223d52ae411a33cf7e54ec6034ec165df296ccd23533d671a28252b6f66a"
diff --git a/src/tools/rls b/src/tools/rls
index c9d25b667af76..f331ff713917f 160000
--- a/src/tools/rls
+++ b/src/tools/rls
@@ -1 +1 @@
-Subproject commit c9d25b667af766e8fe6d3b6168a5f99a0e4d722a
+Subproject commit f331ff713917f6edb044c7e5c6c28c3845afebe7