diff --git a/Cargo.lock b/Cargo.lock
index a6a728f9..b994ef23 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.15"
+version = "0.7.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
 dependencies = [
  "memchr",
 ]
@@ -30,16 +30,16 @@ dependencies = [
 
 [[package]]
 name = "async-executor"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb877970c7b440ead138f6321a3b5395d6061183af779340b65e20c0fede9146"
+checksum = "871f9bb5e0a22eeb7e8cf16641feb87c9dc67032ccf8ff49e772eb9941d3a965"
 dependencies = [
  "async-task",
  "concurrent-queue",
  "fastrand",
  "futures-lite",
  "once_cell",
- "vec-arena",
+ "slab",
 ]
 
 [[package]]
@@ -55,9 +55,9 @@ dependencies = [
 
 [[package]]
 name = "async-io"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcb9af4888a70ad78ecb5efcb0ba95d66a3cf54a88b62ae81559954c7588c7a2"
+checksum = "4bbfd5cf2794b1e908ea8457e6c45f8f8f1f6ec5f74617bf4662623f47503c3b"
 dependencies = [
  "concurrent-queue",
  "fastrand",
@@ -67,8 +67,8 @@ dependencies = [
  "once_cell",
  "parking",
  "polling",
+ "slab",
  "socket2",
- "vec-arena",
  "waker-fn",
  "winapi",
 ]
@@ -84,9 +84,9 @@ dependencies = [
 
 [[package]]
 name = "async-net"
-version = "1.5.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06de475c85affe184648202401d7622afb32f0f74e02192857d0201a16defbe5"
+checksum = "69b0a74e7f70af3c8cf1aa539edbd044795706659ac52b78a71dc1a205ecefdf"
 dependencies = [
  "async-io",
  "blocking",
@@ -96,15 +96,16 @@ dependencies = [
 
 [[package]]
 name = "async-process"
-version = "1.0.2"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef37b86e2fa961bae5a4d212708ea0154f904ce31d1a4a7f47e1bbc33a0c040b"
+checksum = "a8f38756dd9ac84671c428afbf7c9f7495feff9ec5b0710f17100098e5b354ac"
 dependencies = [
  "async-io",
  "blocking",
  "cfg-if",
  "event-listener",
  "futures-lite",
+ "libc",
  "once_cell",
  "signal-hook 0.3.8",
  "winapi",
@@ -150,9 +151,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "0.2.15"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a40b47ad93e1a5404e6c18dec46b628214fee441c70f4ab5d6942142cc268a3d"
+checksum = "90682c8d613ad3373e66de8c6411e0ae2ab2571e879d2efbf73558cc66f21279"
 dependencies = [
  "memchr",
 ]
@@ -222,9 +223,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7e9d99fa91428effe99c5c6d4634cdeba32b8cf784fc428a2a687f61a952c49"
+checksum = "4feb231f0d4d6af81aed15928e58ecf5816aa62a2393e2c82f46973e92a9a278"
 dependencies = [
  "autocfg",
  "cfg-if",
@@ -286,9 +287,9 @@ checksum = "f7531096570974c3a9dcf9e4b8e1cede1ec26cf5046219fb3b9d897503b9be59"
 
 [[package]]
 name = "fastrand"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca5faf057445ce5c9d4329e382b2ce7ca38550ef3b73a5348362d5f24e0c7fe3"
+checksum = "77b705829d1e87f762c2df6da140b26af5839e1033aa84aa5f56bb688e4e1bdb"
 dependencies = [
  "instant",
 ]
@@ -669,15 +670,15 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.93"
+version = "0.2.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
+checksum = "18794a8ad5b29321f790b55d93dfba91e125cb1a9edbd4f8e3150acc771c1a5e"
 
 [[package]]
 name = "lock_api"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a3c91c24eae6777794bb1997ad98bbb87daf92890acab859f7eaa4320333176"
+checksum = "0382880606dff6d15c9476c416d18690b72742aa7b605bb6dd6ec9030fbf07eb"
 dependencies = [
  "scopeguard",
 ]
@@ -718,9 +719,9 @@ checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 
 [[package]]
 name = "memchr"
-version = "2.3.4"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
 
 [[package]]
 name = "mio"
@@ -917,9 +918,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8270314b5ccceb518e7e578952f0b72b88222d02e8f77f5ecf7abbb673539041"
+checksum = "85dd92e586f7355c633911e11f77f3d12f04b1b1bd76a198bd34ae3af8341ef2"
 dependencies = [
  "bitflags",
 ]
@@ -936,9 +937,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.4.5"
+version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "957056ecddbeba1b26965114e191d2e8589ce74db242b6ea25fc4062427a5c19"
+checksum = "ce5f1ceb7f74abbce32601642fcf8e8508a8a8991e0621c7d750295b9095702b"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -947,9 +948,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.23"
+version = "0.6.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5f089152e60f62d28b835fbff2cd2e8dc0baf1ac13343bef92ab7eed84548"
+checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
 
 [[package]]
 name = "ropey"
@@ -1123,9 +1124,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.69"
+version = "1.0.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48fe99c6bd8b1cc636890bcc071842de909d902c81ac7dab53ba33c421ab8ffb"
+checksum = "ad184cc9470f9117b2ac6817bfe297307418819ba40552f9b3846f05c33d5373"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1226,8 +1227,9 @@ dependencies = [
 
 [[package]]
 name = "tui"
-version = "0.14.0"
-source = "git+https://github.com/fdehau/tui-rs#4e76bfa2ca8eb51719d611bb8d3d4094ab8ba398"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "861d8f3ad314ede6219bcb2ab844054b1de279ee37a9bc38e3d606f9d3fb2a71"
 dependencies = [
  "bitflags",
  "cassowary",
@@ -1277,9 +1279,9 @@ checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
 
 [[package]]
 name = "unicode-xid"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
 name = "url"
@@ -1300,12 +1302,6 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
 
-[[package]]
-name = "vec-arena"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34b2f665b594b07095e3ac3f718e13c2197143416fae4c5706cffb7b1af8d7f1"
-
 [[package]]
 name = "vec_map"
 version = "0.8.2"
diff --git a/flake.lock b/flake.lock
index a927eb95..82e41f3f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "flake-utils": {
       "locked": {
-        "lastModified": 1617631617,
-        "narHash": "sha256-PARRCz55qN3gy07VJZIlFeOX420d0nGF0RzGI/9hVlw=",
+        "lastModified": 1619345332,
+        "narHash": "sha256-qHnQkEp1uklKTpx3MvKtY6xzgcqXDsz5nLilbbuL+3A=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b2c27d1a81b0dc266270fa8aeecebbd1807fc610",
+        "rev": "2ebf2558e5bf978c7fb8ea927dfaed8fefab2e28",
         "type": "github"
       },
       "original": {
@@ -35,11 +35,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1614785451,
-        "narHash": "sha256-TPw8kQvr2UNCuvndtY+EjyXp6Q5GEW2l9UafXXh1XmI=",
+        "lastModified": 1618844365,
+        "narHash": "sha256-Z9t0rr+5OG/ru3jdg3jivfYVU4ydV/nqt8UwIut7uHs=",
         "owner": "nmattia",
         "repo": "naersk",
-        "rev": "e0fe990b478a66178a58c69cf53daec0478ca6f9",
+        "rev": "32e3ba39d9d83098b13720a4384bdda191dd0445",
         "type": "github"
       },
       "original": {
@@ -50,10 +50,10 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1617755977,
-        "narHash": "sha256-vkYi/Q25f9g2ZISS1IT27S+Vv1WDybdegs5SLsktAHw=",
-        "path": "/nix/store/3sazzf324zxa6wc2dw1x02dh1v05g4s1-source",
-        "rev": "4cb48cc25622334f17ec6b9bf56e83de0d521fb7",
+        "lastModified": 1619775165,
+        "narHash": "sha256-2qaBErjxuWpTIq6Yee5GJmhr84hmzBotLQ0ayg1VXg8=",
+        "path": "/nix/store/gs997rgx3pvdgcb54wd3fi9wbnznd9g4-source",
+        "rev": "849b29b4f76d66ec7aeeeed699b7e27ef3db7c02",
         "type": "path"
       },
       "original": {
@@ -63,11 +63,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1617899217,
-        "narHash": "sha256-gd5JHH7IkeoIQ/oiGZSqDpGdGt7DMRJTQ8JiD8+hdOQ=",
+        "lastModified": 1619464443,
+        "narHash": "sha256-R7WAb8EnkIJxxaF6GTHUPytjonhB4Zm0iatyWoW169A=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9e377a6ce42dccd9b624ae4ce8f978dc892ba0e2",
+        "rev": "8e4fe32876ca15e3d5eb3ecd3ca0b224417f5f17",
         "type": "github"
       },
       "original": {
@@ -106,11 +106,11 @@
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1617935044,
-        "narHash": "sha256-14AECpzqqDaA0gJk/Auo4usKG8PfM4Dr9eDAC/Dm7JM=",
+        "lastModified": 1619835986,
+        "narHash": "sha256-RZ6opJgAJhcW6jou50D+V36BHu3WUc2uh4C42vx4kio=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "5b846f742b2350c175311506e840a29cc0278700",
+        "rev": "4f2051c76032e86338219f477e5ac9e522dd362a",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 23763dac..8ad3c90a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,8 +12,15 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = import nixpkgs { inherit system; overlays = [ rust-overlay.overlay ]; };
-        naerskLib = pkgs.callPackage naersk {
-          inherit (pkgs.rust-bin.stable.latest.default) rustc cargo;
+        rust = (pkgs.rustChannelOf {
+            date = "2021-05-01";
+            channel = "nightly";
+        }).minimal; # cargo, rustc and rust-std
+        naerskLib = naersk.lib."${system}".override {
+          # naersk can't build with stable?!
+          # inherit (pkgs.rust-bin.stable.latest) rustc cargo;
+          rustc = rust;
+          cargo = rust;
         };
       in rec {
         packages.helix = naerskLib.buildPackage {
diff --git a/helix-term/Cargo.toml b/helix-term/Cargo.toml
index a68b9d7d..8f3a28fd 100644
--- a/helix-term/Cargo.toml
+++ b/helix-term/Cargo.toml
@@ -22,8 +22,7 @@ once_cell = "1.4"
 smol = "1"
 smol-timeout = "0.6"
 num_cpus = "1"
-# tui = { version = "0.12", default-features = false, features = ["crossterm"] }
-tui = { git = "https://github.com/fdehau/tui-rs", default-features = false, features = ["crossterm"] }
+tui = { version = "0.15", default-features = false, features = ["crossterm"] }
 crossterm = { version = "0.19", features = ["event-stream"] }
 clap = { version = "3.0.0-beta.2 ", default-features = false, features = ["std", "cargo"] }
 
diff --git a/helix-view/Cargo.toml b/helix-view/Cargo.toml
index af322424..a49d440c 100644
--- a/helix-view/Cargo.toml
+++ b/helix-view/Cargo.toml
@@ -16,8 +16,7 @@ helix-core = { path = "../helix-core" }
 helix-lsp = { path = "../helix-lsp"}
 
 # Conversion traits
-# tui = { version = "0.12", default-features = false, features = ["crossterm"], optional = true}
-tui = { git = "https://github.com/fdehau/tui-rs", default-features = false, features = ["crossterm"], optional = true}
+tui = { version = "0.15", default-features = false, features = ["crossterm"], optional = true}
 crossterm = { version = "0.19", features = ["event-stream"], optional = true }
 once_cell = "1.4"
 url = "2"