diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index dedf71ae8518..ccc5b54474f7 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -12615,6 +12615,12 @@
     githubId = 1903418;
     name = "Kovacsics Robert";
   };
+  kpbaks = {
+    email = "kristoffer.pbs@gmail.com";
+    github = "kpbaks";
+    githubId = 57013304;
+    name = "Kristoffer Plagborg Bak Sørensen";
+  };
   kpcyrd = {
     email = "git@rxv.cc";
     github = "kpcyrd";
diff --git a/pkgs/by-name/si/simple-completion-language-server/package.nix b/pkgs/by-name/si/simple-completion-language-server/package.nix
new file mode 100644
index 000000000000..34cd78cf894d
--- /dev/null
+++ b/pkgs/by-name/si/simple-completion-language-server/package.nix
@@ -0,0 +1,32 @@
+{
+  lib,
+  fetchFromGitHub,
+  rustPlatform,
+  withCitation ? true,
+}:
+
+rustPlatform.buildRustPackage {
+  pname = "simple-completion-language-server";
+  version = "0-unstable-2025-01-31";
+
+  src = fetchFromGitHub {
+    owner = "estin";
+    repo = "simple-completion-language-server";
+    rev = "f6ab8e8374d046e5c6ff36cc9804dfc708b56c02";
+    hash = "sha256-ot2h85cn2ID7GAOSJvIeKcC3uUYzS3TWQ4Ql6MzPG50=";
+  };
+
+  useFetchCargoVendor = true;
+  cargoHash = "sha256-L0Xa+B5hMkVKdOD0YAyGErbgAY68CHzzeP0CLew0BMs=";
+
+  buildFeatures = lib.optional withCitation [ "citation" ];
+
+  meta = {
+    description = "Language server to enable word completion and snippets for Helix editor";
+    homepage = "https://github.com/estin/simple-completion-language-server";
+    license = [ lib.licenses.mit ];
+    maintainers = [ lib.maintainers.kpbaks ];
+    mainProgram = "simple-completion-language-server";
+    platforms = lib.platforms.all;
+  };
+}