diff --git a/pkgs/applications/audio/iannix/default.nix b/pkgs/applications/audio/iannix/default.nix
index 3765d2ca678..57d91a298ca 100644
--- a/pkgs/applications/audio/iannix/default.nix
+++ b/pkgs/applications/audio/iannix/default.nix
@@ -3,13 +3,13 @@
 
 mkDerivation rec {
   pname = "iannix";
-  version = "0.9.20-b";
+  version = "unstable-2020-12-09";
 
   src = fetchFromGitHub {
     owner = "iannix";
     repo = "IanniX";
-    rev = "v${version}";
-    sha256 = "6jjgMvD2VkR3ztU5LguqhtNd+4/ZqRy5pVW5xQ6K20Q=";
+    rev = "287b51d9b90b3e16ae206c0c4292599619f7b159";
+    sha256 = "AhoP+Ok78Vk8Aee/RP572hJeM8O7v2ZTvFalOZZqRy8=";
   };
 
   nativeBuildInputs = [ pkgconfig qmake ];
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 970cdf7ad7e..d2d4970c4f7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4757,7 +4757,7 @@ in
 
   iasl = callPackage ../development/compilers/iasl { };
 
-  iannix = libsForQt514.callPackage ../applications/audio/iannix { };
+  iannix = libsForQt5.callPackage ../applications/audio/iannix { };
 
   jamulus = libsForQt5.callPackage ../applications/audio/jamulus { };