diff --git a/pkgs/development/tools/language-servers/millet/Cargo.lock b/pkgs/development/tools/language-servers/millet/Cargo.lock
index 3a911a5d7605..ff5974a8065b 100644
--- a/pkgs/development/tools/language-servers/millet/Cargo.lock
+++ b/pkgs/development/tools/language-servers/millet/Cargo.lock
@@ -16,7 +16,7 @@ name = "analysis"
 version = "0.1.0"
 dependencies = [
  "config",
- "diagnostic-util",
+ "diagnostic",
  "elapsed",
  "fmt-util",
  "input",
@@ -67,7 +67,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 [[package]]
 name = "char-name"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "cm-syntax"
@@ -83,7 +83,7 @@ dependencies = [
 [[package]]
 name = "code-h2-md-map"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "fast-hash",
 ]
@@ -134,12 +134,9 @@ dependencies = [
 ]
 
 [[package]]
-name = "diagnostic-util"
+name = "diagnostic"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
-dependencies = [
- "text-pos",
-]
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "diff"
@@ -156,7 +153,7 @@ checksum = "9bda8e21c04aca2ae33ffc2fd8c23134f3cac46db123ba97bd9d3f3b8a4a85e1"
 [[package]]
 name = "elapsed"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "log",
 ]
@@ -176,13 +173,13 @@ dependencies = [
 
 [[package]]
 name = "errno"
-version = "0.2.8"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1"
+checksum = "50d6a0976c999d473fe89ad888d5a284e55366d9dc9038b1ba2aa15128c4afa0"
 dependencies = [
  "errno-dragonfly",
  "libc",
- "winapi",
+ "windows-sys",
 ]
 
 [[package]]
@@ -198,7 +195,7 @@ dependencies = [
 [[package]]
 name = "event-parse"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "drop_bomb",
  "rowan",
@@ -208,7 +205,7 @@ dependencies = [
 [[package]]
 name = "fast-hash"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "rustc-hash",
 ]
@@ -216,7 +213,7 @@ dependencies = [
 [[package]]
 name = "fmt-util"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "form_urlencoded"
@@ -263,7 +260,7 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 [[package]]
 name = "identifier-case"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "idna"
@@ -278,7 +275,7 @@ dependencies = [
 [[package]]
 name = "idx"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "indexmap"
@@ -296,7 +293,7 @@ version = "0.1.0"
 dependencies = [
  "cm-syntax",
  "config",
- "diagnostic-util",
+ "diagnostic",
  "fast-hash",
  "mlb-hir",
  "mlb-syntax",
@@ -327,9 +324,9 @@ dependencies = [
 
 [[package]]
 name = "is-terminal"
-version = "0.4.5"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8687c819457e979cc940d09cb16e42a1bf70aa6b60a549de6d3a62a0ee90c69e"
+checksum = "256017f749ab3117e93acb91063009e1f1bb56d03965b14c2c8df4eb02c524d8"
 dependencies = [
  "hermit-abi",
  "io-lifetimes",
@@ -357,7 +354,7 @@ dependencies = [
  "anyhow",
  "config",
  "crossbeam-channel",
- "diagnostic-util",
+ "diagnostic",
  "elapsed",
  "fast-hash",
  "input",
@@ -383,9 +380,9 @@ checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.1.4"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f051f77a7c8e6957c0696eac88f26b0117e54f52d3fc682ab19397a8812846a4"
+checksum = "d59d8c75012853d2e872fb56bc8a2e53718e2cafe1a4c823143141c6d90c322f"
 
 [[package]]
 name = "log"
@@ -442,7 +439,7 @@ version = "0.1.0"
 dependencies = [
  "analysis",
  "config",
- "diagnostic-util",
+ "diagnostic",
  "env_logger",
  "input",
  "paths",
@@ -475,7 +472,7 @@ name = "mlb-statics"
 version = "0.1.0"
 dependencies = [
  "config",
- "diagnostic-util",
+ "diagnostic",
  "fast-hash",
  "mlb-hir",
  "once_cell",
@@ -554,7 +551,7 @@ dependencies = [
 [[package]]
 name = "paths"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "fast-hash",
  "glob",
@@ -565,7 +562,7 @@ dependencies = [
 [[package]]
 name = "pattern-match"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "fast-hash",
 ]
@@ -596,9 +593,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.54"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e472a104799c74b514a57226160104aa483546de37e839ec50e3c2e41dd87534"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
 dependencies = [
  "unicode-ident",
 ]
@@ -661,9 +658,9 @@ checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
 [[package]]
 name = "rustix"
-version = "0.36.11"
+version = "0.37.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db4165c9963ab29e422d6c26fbc1d37f15bace6b2810221f9d925023480fcf0e"
+checksum = "d097081ed288dfe45699b72f5b5d648e5f15d64d900c7080273baa20c16a6849"
 dependencies = [
  "bitflags",
  "errno",
@@ -681,29 +678,29 @@ checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
 
 [[package]]
 name = "serde"
-version = "1.0.158"
+version = "1.0.159"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "771d4d9c4163ee138805e12c710dd365e4f44be8be0503cb1bb9eb989425d9c9"
+checksum = "3c04e8343c3daeec41f58990b9d77068df31209f2af111e059e9fe9646693065"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.158"
+version = "1.0.159"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e801c1712f48475582b7696ac71e0ca34ebb30e09338425384269d9717c62cad"
+checksum = "4c614d17805b093df4b147b51339e7e44bf05ef59fba1e45d83500bcfb4d8585"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.10",
+ "syn 2.0.13",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.94"
+version = "1.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1c533a59c9d8a93a09c6ab31f0fd5e5f4dd1b8fc9434804029839884765d04ea"
+checksum = "d721eca97ac802aa7777b701877c8004d950fc142651367300d21c1cc0194744"
 dependencies = [
  "itoa",
  "ryu",
@@ -718,7 +715,7 @@ checksum = "bcec881020c684085e55a25f7fd888954d56609ef363479dc5a1305eb0d40cab"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.10",
+ "syn 2.0.13",
 ]
 
 [[package]]
@@ -782,7 +779,7 @@ dependencies = [
 name = "sml-lex"
 version = "0.1.0"
 dependencies = [
- "diagnostic-util",
+ "diagnostic",
  "lex-util",
  "sml-syntax",
 ]
@@ -797,7 +794,7 @@ name = "sml-lower"
 version = "0.1.0"
 dependencies = [
  "config",
- "diagnostic-util",
+ "diagnostic",
  "fast-hash",
  "lex-util",
  "num-traits",
@@ -824,7 +821,7 @@ version = "0.1.0"
 name = "sml-parse"
 version = "0.1.0"
 dependencies = [
- "diagnostic-util",
+ "diagnostic",
  "event-parse",
  "fast-hash",
  "sml-fixity",
@@ -845,7 +842,7 @@ version = "0.1.0"
 dependencies = [
  "code-h2-md-map",
  "config",
- "diagnostic-util",
+ "diagnostic",
  "drop_bomb",
  "elapsed",
  "fast-hash",
@@ -904,7 +901,7 @@ dependencies = [
 [[package]]
 name = "str-util"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "smol_str",
 ]
@@ -922,9 +919,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.10"
+version = "2.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5aad1363ed6d37b84299588d62d3a7d95b5a5c2d9aad5c85609fda12afaa1f40"
+checksum = "4c9da457c5285ac1f936ebd076af6dac17a61cfe7826f2076b4d015cf47bc8ec"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -934,7 +931,7 @@ dependencies = [
 [[package]]
 name = "syntax-gen"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "fast-hash",
  "identifier-case",
@@ -959,7 +956,7 @@ dependencies = [
  "analysis",
  "cm-syntax",
  "config",
- "diagnostic-util",
+ "diagnostic",
  "env_logger",
  "fast-hash",
  "input",
@@ -980,7 +977,7 @@ dependencies = [
 [[package]]
 name = "text-pos"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "fast-hash",
  "text-size-util",
@@ -995,7 +992,7 @@ checksum = "288cb548dbe72b652243ea797201f3d481a0609a967980fcc5b2315ea811560a"
 [[package]]
 name = "text-size-util"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 dependencies = [
  "text-size",
 ]
@@ -1018,7 +1015,7 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 [[package]]
 name = "token"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "toml"
@@ -1057,7 +1054,7 @@ dependencies = [
 [[package]]
 name = "topo-sort"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "ungrammar"
@@ -1104,7 +1101,7 @@ checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 [[package]]
 name = "uniq"
 version = "0.1.0"
-source = "git+https://github.com/azdavis/language-util.git#9f18d44407b438d5de8f1540963d532cfd8b5587"
+source = "git+https://github.com/azdavis/language-util.git#14721e8e4c56b2eaffb259a8845653b898bf4caa"
 
 [[package]]
 name = "url"
diff --git a/pkgs/development/tools/language-servers/millet/default.nix b/pkgs/development/tools/language-servers/millet/default.nix
index 9ba339270181..e1a9dfe2b279 100644
--- a/pkgs/development/tools/language-servers/millet/default.nix
+++ b/pkgs/development/tools/language-servers/millet/default.nix
@@ -2,19 +2,19 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "millet";
-  version = "0.8.6";
+  version = "0.8.7";
 
   src = fetchFromGitHub {
     owner = "azdavis";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-TWxhppR3G1u3YkyeIHKBWprqOn22YhRIORkAVaFR/RY=";
+    hash = "sha256-kHw7hyOH/GAFRh0TErFMXU3NBge2AwpJr8oXbtnWCfc=";
   };
 
   cargoLock = {
     lockFile = ./Cargo.lock;
     outputHashes = {
-      "char-name-0.1.0" = "sha256-4DX/o1CjZ08mDXXPy87GNXiikP9L9nyhR7qYzCPVtAY=";
+      "char-name-0.1.0" = "sha256-8biNETzXhR3GE5Ywrbcd4199h3ipwwZbtpZOQGOYA1g=";
       "rowan-0.15.10" = "sha256-yOaUq2tQEiNgQB7qB8fFzfnwUWagu72MIPHmaTX0B0Y=";
       "sml-libs-0.1.0" = "sha256-6jbRMqlW5sL0x0i4qatduXvLHhrkUE7gsSwC6JYwiHQ=";
     };