diff --git a/pkgs/development/tools/build-managers/bazel/bazel_4/default.nix b/pkgs/development/tools/build-managers/bazel/bazel_4/default.nix
index 6cd378492e32..47e01c5ad807 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_4/default.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_4/default.nix
@@ -27,12 +27,12 @@
 }:
 
 let
-  version = "4.1.0";
+  version = "4.2.1";
   sourceRoot = ".";
 
   src = fetchurl {
     url = "https://github.com/bazelbuild/bazel/releases/download/${version}/bazel-${version}-dist.zip";
-    sha256 = "1svf9n345m0ag05hlcw3cwsl6bw2imcn4da25yyzcl3ar5axfxzk";
+    sha256 = "Eup6oR4r2xLeHc65k5oi6W9aSAQ3yxfBIzedjg/fXoI=";
   };
 
   # Update with `eval $(nix-build -A bazel.updater)`,
@@ -56,7 +56,7 @@ let
        else srcs."java_tools_javac11_linux-v10.6.zip")
       srcs."coverage_output_generator-v2.5.zip"
       srcs.build_bazel_rules_nodejs
-      srcs."android_tools_pkg-0.19.0rc3.tar.gz"
+      srcs."android_tools_pkg-0.23.0.tar.gz"
       srcs.bazel_toolchains
       srcs.com_github_grpc_grpc
       srcs.upb
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_4/src-deps.json b/pkgs/development/tools/build-managers/bazel/bazel_4/src-deps.json
index 3027183aef39..4496343ec691 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_4/src-deps.json
+++ b/pkgs/development/tools/build-managers/bazel/bazel_4/src-deps.json
@@ -62,14 +62,14 @@
         "patch_cmds_win": [
             "Add-Content -Path BUILD -Value \"`nexports_files([`\"WORKSPACE`\"], visibility = [`\"//visibility:public`\"])`n\" -Force"
         ],
-        "sha256": "ea5c0589a01e2a9f43c20e5c145d3530e3b3bdbe7322789bc5da38d0ca49b837",
-        "url": "https://mirror.bazel.build/bazel_android_tools/android_tools_pkg-0.19.0rc3.tar.gz"
+        "sha256": "ed5290594244c2eeab41f0104519bcef51e27c699ff4b379fcbd25215270513e",
+        "url": "https://mirror.bazel.build/bazel_android_tools/android_tools_pkg-0.23.0.tar.gz"
     },
-    "android_tools_pkg-0.19.0rc3.tar.gz": {
-        "name": "android_tools_pkg-0.19.0rc3.tar.gz",
-        "sha256": "ea5c0589a01e2a9f43c20e5c145d3530e3b3bdbe7322789bc5da38d0ca49b837",
+    "android_tools_pkg-0.23.0.tar.gz": {
+        "name": "android_tools_pkg-0.23.0.tar.gz",
+        "sha256": "ed5290594244c2eeab41f0104519bcef51e27c699ff4b379fcbd25215270513e",
         "urls": [
-            "https://mirror.bazel.build/bazel_android_tools/android_tools_pkg-0.19.0rc3.tar.gz"
+            "https://mirror.bazel.build/bazel_android_tools/android_tools_pkg-0.23.0.tar.gz"
         ]
     },
     "b1c40e1de81913a3c40e5948f78719c28152486d.zip": {