diff --git a/pkgs/development/tools/language-servers/millet/Cargo.lock b/pkgs/development/tools/language-servers/millet/Cargo.lock
index d77d8c39878e..bffb17a54656 100644
--- a/pkgs/development/tools/language-servers/millet/Cargo.lock
+++ b/pkgs/development/tools/language-servers/millet/Cargo.lock
@@ -28,7 +28,7 @@ dependencies = [
 
 [[package]]
 name = "analysis"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "config",
  "diagnostic",
@@ -108,7 +108,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chain-map"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "str-util",
@@ -121,7 +121,7 @@ source = "git+https://github.com/azdavis/language-util.git#13b015c6a11357b2b9a7e
 
 [[package]]
 name = "cm-syntax"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "lex-util",
  "paths",
@@ -150,7 +150,7 @@ dependencies = [
 
 [[package]]
 name = "config"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "serde",
@@ -178,7 +178,7 @@ checksum = "7704b5fdd17b18ae31c4c1da5a2e0305a2bf17b5249300a9ee9ed7b72114c636"
 
 [[package]]
 name = "cov-mark"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "once_cell",
@@ -415,7 +415,7 @@ dependencies = [
 
 [[package]]
 name = "input"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "cm-syntax",
  "config",
@@ -475,7 +475,7 @@ checksum = "3752f229dcc5a481d60f385fa479ff46818033d881d2d801aa27dffcfb5e8306"
 
 [[package]]
 name = "lang-srv"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "analysis",
  "anyhow",
@@ -503,7 +503,7 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "lex-util"
-version = "0.12.0"
+version = "0.12.2"
 
 [[package]]
 name = "libc"
@@ -575,7 +575,7 @@ dependencies = [
 
 [[package]]
 name = "millet-cli"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "analysis",
  "codespan-reporting",
@@ -593,7 +593,7 @@ dependencies = [
 
 [[package]]
 name = "millet-ls"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "anyhow",
  "env_logger",
@@ -622,7 +622,7 @@ dependencies = [
 
 [[package]]
 name = "mlb-hir"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "paths",
@@ -633,7 +633,7 @@ dependencies = [
 
 [[package]]
 name = "mlb-statics"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "config",
  "diagnostic",
@@ -657,7 +657,7 @@ dependencies = [
 
 [[package]]
 name = "mlb-syntax"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "lex-util",
  "paths",
@@ -729,7 +729,7 @@ dependencies = [
 
 [[package]]
 name = "panic-hook"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "better-panic",
 ]
@@ -923,7 +923,7 @@ dependencies = [
 
 [[package]]
 name = "slash-var-path"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "str-util",
@@ -931,14 +931,14 @@ dependencies = [
 
 [[package]]
 name = "sml-comment"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "sml-syntax",
 ]
 
 [[package]]
 name = "sml-dynamics"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "fmt-util",
@@ -949,7 +949,7 @@ dependencies = [
 
 [[package]]
 name = "sml-dynamics-tests"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "config",
  "pretty_assertions",
@@ -965,7 +965,7 @@ dependencies = [
 
 [[package]]
 name = "sml-file-syntax"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "config",
  "elapsed",
@@ -979,7 +979,7 @@ dependencies = [
 
 [[package]]
 name = "sml-fixity"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "once_cell",
@@ -988,7 +988,7 @@ dependencies = [
 
 [[package]]
 name = "sml-hir"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "la-arena",
  "sml-lab",
@@ -999,7 +999,7 @@ dependencies = [
 
 [[package]]
 name = "sml-hir-lower"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "config",
  "cov-mark",
@@ -1014,14 +1014,14 @@ dependencies = [
 
 [[package]]
 name = "sml-lab"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "str-util",
 ]
 
 [[package]]
 name = "sml-lex"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "cov-mark",
  "diagnostic",
@@ -1036,7 +1036,7 @@ source = "git+https://github.com/azdavis/sml-libs.git#3948485e5bf5649e50271caf3e
 
 [[package]]
 name = "sml-naive-fmt"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "sml-comment",
@@ -1045,11 +1045,11 @@ dependencies = [
 
 [[package]]
 name = "sml-namespace"
-version = "0.12.0"
+version = "0.12.2"
 
 [[package]]
 name = "sml-parse"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "diagnostic",
  "event-parse",
@@ -1061,14 +1061,14 @@ dependencies = [
 
 [[package]]
 name = "sml-path"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "str-util",
 ]
 
 [[package]]
 name = "sml-scon"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1077,7 +1077,7 @@ dependencies = [
 
 [[package]]
 name = "sml-statics"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "chain-map",
  "config",
@@ -1100,7 +1100,7 @@ dependencies = [
 
 [[package]]
 name = "sml-statics-types"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "chain-map",
  "code-h2-md-map",
@@ -1119,7 +1119,7 @@ dependencies = [
 
 [[package]]
 name = "sml-symbol-kind"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "sml-namespace",
  "sml-statics-types",
@@ -1127,7 +1127,7 @@ dependencies = [
 
 [[package]]
 name = "sml-syntax"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "char-name",
  "code-h2-md-map",
@@ -1140,7 +1140,7 @@ dependencies = [
 
 [[package]]
 name = "sml-ty-var-scope"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "fast-hash",
  "sml-hir",
@@ -1208,7 +1208,7 @@ dependencies = [
 
 [[package]]
 name = "tests"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "analysis",
  "cm-syntax",
@@ -1552,7 +1552,7 @@ dependencies = [
 
 [[package]]
 name = "xtask"
-version = "0.12.0"
+version = "0.12.2"
 dependencies = [
  "anyhow",
  "flate2",
diff --git a/pkgs/development/tools/language-servers/millet/default.nix b/pkgs/development/tools/language-servers/millet/default.nix
index 11aad10e0f91..e35e8c69defb 100644
--- a/pkgs/development/tools/language-servers/millet/default.nix
+++ b/pkgs/development/tools/language-servers/millet/default.nix
@@ -2,13 +2,13 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "millet";
-  version = "0.12.0";
+  version = "0.12.2";
 
   src = fetchFromGitHub {
     owner = "azdavis";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-WoawuH0fuhVrTEtcdfkKpJUQBcbMnbybDST4DDkJEqM=";
+    hash = "sha256-qfBDwbAbj4XoZeH0hyS09iUfg0G1X1RjpVOSd+2twT0=";
   };
 
   cargoLock = {