diff --git a/pkgs/by-name/ba/basiliskii/package.nix b/pkgs/by-name/ba/basiliskii/package.nix
index 256055aa1ca4..061f9be79724 100644
--- a/pkgs/by-name/ba/basiliskii/package.nix
+++ b/pkgs/by-name/ba/basiliskii/package.nix
@@ -11,15 +11,15 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "basiliskii";
-  version = "unstable-2025-07-16";
+  version = "unstable-2026-06-30";
 
   # This src is also used to build pkgs/os-specific/linux/sheep-net
   # Therefore changes to it may effect the sheep-net package
   src = fetchFromGitHub {
     owner = "kanjitalk755";
     repo = "macemu";
-    rev = "030599cf8d31cb80afae0e1b086b5706dbdd2eea";
-    sha256 = "sha256-gxaj+2ymelH6uWmjMLXi64xMNrToo6HZcJ7RW7sVMzo=";
+    rev = "51b5255eead47203ae78636796a6e6d5713e6705";
+    sha256 = "sha256-/8k5NNnfl3PZWFXECtiNdLi2CwACp2b5uiIpSOmWcDI=";
   };
   sourceRoot = "${finalAttrs.src.name}/BasiliskII/src/Unix";
   patches = [ ./remove-redhat-6-workaround-for-scsi-sg.h.patch ];