diff --git a/pkgs/development/libraries/nlohmann_json/default.nix b/pkgs/development/libraries/nlohmann_json/default.nix
index ec4df7927f2b..70699db418ad 100644
--- a/pkgs/development/libraries/nlohmann_json/default.nix
+++ b/pkgs/development/libraries/nlohmann_json/default.nix
@@ -7,18 +7,18 @@ let
   testData = fetchFromGitHub {
     owner = "nlohmann";
     repo = "json_test_data";
-    rev = "v3.0.0";
-    sha256 = "O6p2PFB7c2KE9VqWvmTaFywbW1hSzAP5V42EuemX+ls=";
+    rev = "v3.1.0";
+    hash = "sha256-bG34W63ew7haLnC82A3lS7bviPDnApLipaBjJAjLcVk=";
   };
 in stdenv.mkDerivation (finalAttrs: {
   pname = "nlohmann_json";
-  version = "3.10.5";
+  version = "3.11.2";
 
   src = fetchFromGitHub {
     owner = "nlohmann";
     repo = "json";
     rev = "v${finalAttrs.version}";
-    sha256 = "DTsZrdB9GcaNkx7ZKxcgCA3A9ShM5icSF0xyGguJNbk=";
+    hash = "sha256-SUdhIV7tjtacf5DkoWk9cnkfyMlrkg8ZU7XnPZd22Tw=";
   };
 
   nativeBuildInputs = [ cmake ];