diff --git a/nix/frama-c.nix b/nix/frama-c.nix
index 0678053029619d4777379a3970390b64a9424c39..e3949630bab22a158b0c93fc7621a0510ba026ee 100644
--- a/nix/frama-c.nix
+++ b/nix/frama-c.nix
@@ -47,6 +47,7 @@
 , zarith
 , zmq
 # Frama-C extra (other targets do not reconfigure)
+, check-jsonschema
 , dos2unix
 , doxygen
 , python3
@@ -80,6 +81,7 @@ stdenvNoCC.mkDerivation rec {
     bisect_ppx
     camlzip
     camomile
+    check-jsonschema
     dune_3
     dune-configurator
     dune-site