diff --git a/release.nix b/release.nix
index cf17657e..ce07010a 100644
--- a/release.nix
+++ b/release.nix
@@ -132,7 +132,7 @@ rec {
           perlDeps perl nix
           postgresql95 # for running the tests
           boost
-          nlohmann_json
+          (nlohmann_json.override { multipleHeaders = true; })
         ];
 
       hydraPath = lib.makeBinPath (