diff --git a/release.nix b/release.nix
index 4ee34d7..0cc89ab 100644
--- a/release.nix
+++ b/release.nix
@@ -67,17 +67,15 @@ in
 
   inherit tarballs;
 
-  coverage.nosv = pkgs.releaseTools.coverageAnalysis {
-    name = "nosv-coverage";
-    inherit (pkgs.nosv) src;
-    lcovFilter = [ "*/tests/*" ];
-  };
-
   sanitized.nosv = pkgs.nosv.overrideAttrs (old: {
-    configureFlags = [
-      "--enable-asan "
+    configureFlags = (old.configureFlags or []) ++ [
+      "--enable-asan"
+    ];
+  });
+
+  sanitized.nosv-ubsan = pkgs.nosv.overrideAttrs (old: {
+    configureFlags = (old.configureFlags or []) ++ [
       "--enable-ubsan"
     ];
-    # CFLAGS = "-Werror";
   });
 }