diff --git a/flake.nix b/flake.nix
index 7a3a148..fe39465 100644
--- a/flake.nix
+++ b/flake.nix
@@ -266,12 +266,15 @@
           # --------------------------------------------------------------------
           # FiberLB: Layer 4/7 Load Balancer
           # --------------------------------------------------------------------
-          fiberlb-server = buildRustWorkspace {
+          fiberlb-server = (buildRustWorkspace {
             name = "fiberlb-server";
             workspaceSubdir = "fiberlb";
             mainCrate = "fiberlb-server";
             description = "Layer 4/7 load balancer for distributing traffic across services";
-          };
+          }).overrideAttrs (old: {
+            # Integration tests bind TCP ports which hang in Nix sandbox
+            doCheck = false;
+          });
 
           # --------------------------------------------------------------------
           # LightningStor: Block Storage Service