diff --git a/fiat-zig/build.zig b/fiat-zig/build.zig
index 6850a1fe13..6967bf1eec 100644
--- a/fiat-zig/build.zig
+++ b/fiat-zig/build.zig
@@ -2,7 +2,7 @@ const std = @import("std");
 
 pub fn build(b: *std.Build) void {
     const main_tests = b.addTest(.{
-        .root_source_file = .{ .path = "src/main.zig" },
+        .root_source_file = b.path("src/main.zig"),
     });
     const run_main_tests = b.addRunArtifact(main_tests);
     const test_step = b.step("test", "Run library tests");
diff --git a/inversion/zig/build.zig b/inversion/zig/build.zig
index 71740840f7..eb84751600 100644
--- a/inversion/zig/build.zig
+++ b/inversion/zig/build.zig
@@ -2,7 +2,7 @@ const std = @import("std");
 
 pub fn build(b: *std.Build) void {
     const main_tests = b.addTest(.{
-        .root_source_file = .{ .path = "inversion.zig" },
+        .root_source_file = b.path("inversion.zig"),
     });
     const run_main_tests = b.addRunArtifact(main_tests);
     const test_step = b.step("test", "Run tests");