diff --git a/pkgs/development/beam-modules/erlang-ls/default.nix b/pkgs/development/beam-modules/erlang-ls/default.nix
index 952034d5e01a..04d6fc36176f 100644
--- a/pkgs/development/beam-modules/erlang-ls/default.nix
+++ b/pkgs/development/beam-modules/erlang-ls/default.nix
@@ -1,7 +1,7 @@
 { fetchFromGitHub, fetchgit, fetchHex, rebar3Relx, buildRebar3, rebar3-proper
 , stdenv, writeScript, lib, erlang }:
 let
-  version = "0.47.1";
+  version = "0.48.0";
   owner = "erlang-ls";
   repo = "erlang_ls";
   deps = import ./rebar-deps.nix {
@@ -24,7 +24,7 @@ rebar3Relx {
   inherit version;
   src = fetchFromGitHub {
     inherit owner repo;
-    sha256 = "sha256-pW78CBOM0Yi5taPHdCfTTb9H1fbhuQFpf6jaf0cTQdA=";
+    sha256 = "sha256-QwsN/P2FBuhIS/vRlrdvokQS6G77kkZ2Rg5rwNc36Jg=";
     rev = version;
   };
   releaseType = "escript";
diff --git a/pkgs/development/beam-modules/erlang-ls/rebar-deps.nix b/pkgs/development/beam-modules/erlang-ls/rebar-deps.nix
index 18de8cfc72af..afdf4767843b 100644
--- a/pkgs/development/beam-modules/erlang-ls/rebar-deps.nix
+++ b/pkgs/development/beam-modules/erlang-ls/rebar-deps.nix
@@ -131,8 +131,8 @@ let
       src = fetchFromGitHub {
         owner = "josefs";
         repo = "gradualizer";
-        rev = "6e89b4e1cd489637a848cc5ca55058c8a241bf7d";
-        sha256 = "1ix0xgd0267ibx6y68fx4pq8q3j0y7rjs7j3cv3v2gdiy190psy9";
+        rev = "3021d29d82741399d131e3be38d2a8db79d146d4";
+        sha256 = "052f8x9x93yy00pbkl1745ffnwj3blcm39j12i4k166y1zbnwy00";
       };
       beamDeps = [ ];
     };