diff --git a/tools/regz/.github/workflows/ci.yml b/tools/regz/.github/workflows/ci.yml
index 7c6ded4..a05a46a 100644
--- a/tools/regz/.github/workflows/ci.yml
+++ b/tools/regz/.github/workflows/ci.yml
@@ -10,6 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [
+          ubuntu-latest,
           windows-latest,
           macos-latest,
         ]
diff --git a/tools/regz/build.zig b/tools/regz/build.zig
index 136cc75..7cb1c68 100644
--- a/tools/regz/build.zig
+++ b/tools/regz/build.zig
@@ -6,9 +6,7 @@ const GeneratedFile = std.build.GeneratedFile;
 
 pub fn build(b: *std.build.Builder) !void {
     const target = b.standardTargetOptions(.{});
-    const optimize = b.standardOptimizeOption(.{
-        .preferred_optimize_mode = .ReleaseSafe,
-    });
+    const optimize = b.standardOptimizeOption(.{});
 
     const libxml2_dep = b.dependency("libxml2", .{
         .target = target,