diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 660fcea..5b0844f 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: elerch/setup-zig@v3
         with:
-          version: 0.12.0
+          version: 0.13.0
       - uses: elerch/zig-action-cache@v1.1.6
       - name: Build project
         run: zig build --summary all
diff --git a/.gitignore b/.gitignore
index 3d9eccc..73f2717 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 core
 zig-cache
 zig-out
+.zig-cache
+.zig-cache
diff --git a/build.zig b/build.zig
index 55cfe19..34b612a 100644
--- a/build.zig
+++ b/build.zig
@@ -52,7 +52,7 @@ pub fn build(b: *std.Build) !void {
         .name = "universal-lambda-zig",
         // In this case the main source file is merely a path, however, in more
         // complicated build scripts, this could be a generated file.
-        .root_source_file = .{ .path = "src/universal_lambda_build.zig" },
+        .root_source_file = b.path("src/universal_lambda_build.zig"),
         .target = target,
         .optimize = optimize,
     });
@@ -108,7 +108,7 @@ pub fn build(b: *std.Build) !void {
         // but does not run it.
         const exe_tests = b.addTest(.{
             .name = "test: as executable",
-            .root_source_file = .{ .path = "src/test.zig" },
+            .root_source_file = b.path("src/test.zig"),
             .target = b.resolveTargetQuery(t),
             .optimize = optimize,
         });
@@ -128,7 +128,7 @@ pub fn build(b: *std.Build) !void {
         // via shared library
         const lib_tests = b.addTest(.{
             .name = "test: as library",
-            .root_source_file = .{ .path = "src/flexilib.zig" },
+            .root_source_file = b.path("src/flexilib.zig"),
             .target = b.resolveTargetQuery(t),
             .optimize = optimize,
         });
diff --git a/build.zig.zon b/build.zig.zon
index eca1bbb..d459ef9 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -4,16 +4,16 @@
 
     .dependencies = .{
         .flexilib = .{
-            .url = "https://git.lerch.org/lobo/FlexiLib/archive/48c0e893da20c9821f6fe55516861e08b9cb6c77.tar.gz",
-            .hash = "1220a4db25529543a82d199a17495aedd7766fef4f5d0122893566663721167b6168",
+            .url = "https://git.lerch.org/lobo/FlexiLib/archive/4b649eb445a7a51dfcc93cb266de54018b5fd8b7.tar.gz",
+            .hash = "12204081616edd3bdf7ab87a5e6b9846cd1bbfda58bd6506b3315e12e58246ef3ffa",
         },
         .@"lambda-zig" = .{
-            .url = "https://git.lerch.org/lobo/lambda-zig/archive/9d1108697282d24509472d7019c97d1afe06ba1c.tar.gz",
-            .hash = "12205b8a2be03b63a1b07bde373e8293c96be53a68a58054abe8689f80d691633862",
+            .url = "https://git.lerch.org/lobo/lambda-zig/archive/ef5b793882c60ff3d9f3e088fc47758e8ec5a2bc.tar.gz",
+            .hash = "122053d827cde4634ab521ee87cc1195abbbdbd9b5ccc66e557764a151f88c138d02",
         },
         .@"cloudflare-worker-deploy" = .{
-            .url = "https://git.lerch.org/lobo/cloudflare-worker-deploy/archive/7ce8fd1007e3ced1e629aa341cc36ae29919e5d9.tar.gz",
-            .hash = "1220e3cdd8e007af59309b264f695ac8d138bb28721cb4b23319b442ffde8536f71f",
+            .url = "https://git.lerch.org/lobo/cloudflare-worker-deploy/archive/e26fc95f74bf1d64e97a19e65a08339870299f0e.tar.gz",
+            .hash = "122002d9b873cb5416e11170638a9baf5411e3ad3e08631273528d076948040a384d",
         },
     },
 
diff --git a/src/interface.zig b/src/interface.zig
index f6f648a..2ce4e82 100644
--- a/src/interface.zig
+++ b/src/interface.zig
@@ -61,7 +61,8 @@ pub const Response = struct {
     }
     pub fn deinit(res: *Response) void {
         res.body.deinit();
-        if (res.headers_owned) res.allocator.free(res.headers);
+        // TODO: I don't think we should really own these headers at all, ever
+        // if (res.headers_owned) res.allocator.free(res.headers);
         if (res.request.headers_owned) res.allocator.free(res.request.headers);
     }
 };
diff --git a/src/standalone_server.zig b/src/standalone_server.zig
index 17ed6e3..3d06dbd 100644
--- a/src/standalone_server.zig
+++ b/src/standalone_server.zig
@@ -35,7 +35,7 @@ pub fn runStandaloneServerParent(allocator: ?std.mem.Allocator, event_handler: i
     const stdout = std.io.getStdOut();
     const stderr = std.io.getStdErr();
     while (true) {
-        var cp = std.ChildProcess.init(al.items, alloc);
+        var cp = std.process.Child.init(al.items, alloc);
         cp.stdin = stdin;
         cp.stdout = stdout;
         cp.stderr = stderr;