diff --git a/internal/wrench/scripts/install_zig.go b/internal/wrench/scripts/install_zig.go
index 09face4..3e1015c 100644
--- a/internal/wrench/scripts/install_zig.go
+++ b/internal/wrench/scripts/install_zig.go
@@ -20,9 +20,9 @@ func init() {
 		Execute: func(args ...string) error {
 			force := len(args) == 1 && args[0] == "true"
 
-			wantZigVersion, err := QueryLatestZigVersion()
+			wantZigVersion, err := QueryZigVersion("mach-latest")
 			if err != nil {
-				return errors.Wrap(err, "QueryLatestZigVersion")
+				return errors.Wrap(err, "QueryZigVersion")
 			}
 
 			zigVersion, err := Output(os.Stderr, "zig version")
@@ -82,22 +82,26 @@ func init() {
 	})
 }
 
-func QueryLatestZigVersion() (string, error) {
-	resp, err := http.Get("https://ziglang.org/download/index.json")
+func QueryZigVersion(name string) (string, error) {
+	indexURL := "https://machengine.org/zig/index.json"
+	resp, err := http.Get(indexURL)
 	if err != nil {
 		return "", err
 	}
 	defer resp.Body.Close()
 
-	var v *struct {
-		Master struct {
-			Version string
-		}
-	} = nil
+	type Version struct {
+		Version string
+	}
+	v := map[string]Version{}
 	if err := json.NewDecoder(resp.Body).Decode(&v); err != nil {
 		return "", err
 	}
-	return v.Master.Version, nil
+	version, ok := v[name]
+	if !ok {
+		return "", fmt.Errorf("no Zig version %q found in %s", name, indexURL)
+	}
+	return version.Version, nil
 }
 
 func zigArch() string {
diff --git a/internal/wrench/scripts/mach-push-rewrite-zig-version.go b/internal/wrench/scripts/mach-push-rewrite-zig-version.go
index 4908c6b..4b216d0 100644
--- a/internal/wrench/scripts/mach-push-rewrite-zig-version.go
+++ b/internal/wrench/scripts/mach-push-rewrite-zig-version.go
@@ -13,9 +13,9 @@ func init() {
 		Args:        nil,
 		Description: "wrench installs prerequisites (Go), rebuilds itself, and restarts the service",
 		ExecuteResponse: func(args ...string) (*api.ScriptResponse, error) {
-			wantZigVersion, err := QueryLatestZigVersion()
+			wantZigVersion, err := QueryZigVersion("mach-latest")
 			if err != nil {
-				return nil, errors.Wrap(err, "QueryLatestZigVersion")
+				return nil, errors.Wrap(err, "QueryZigVersion")
 			}
 
 			pushed := []string{}
diff --git a/internal/wrench/scripts/stat-mach-core.go b/internal/wrench/scripts/stat-mach-core.go
index ccd8732..282a063 100644
--- a/internal/wrench/scripts/stat-mach-core.go
+++ b/internal/wrench/scripts/stat-mach-core.go
@@ -26,11 +26,11 @@ func init() {
 			}
 
 			step := time.Now()
-			zigVersion, err := QueryLatestZigVersion()
+			zigVersion, err := QueryZigVersion("mach-latest")
 			if err != nil {
-				return nil, errors.Wrap(err, "QueryLatestZigVersion")
+				return nil, errors.Wrap(err, "QueryZigVersion")
 			}
-			durationQueryLatestZigVersion := time.Since(step)
+			durationQueryZigVersion := time.Since(step)
 			step = time.Now()
 
 			// Download the Zig archive
@@ -196,7 +196,7 @@ func init() {
 				return nil, errors.Wrap(err, "GitRevParse")
 			}
 
-			fmt.Fprintln(os.Stderr, "durationQueryLatestZigVersion", durationQueryLatestZigVersion)
+			fmt.Fprintln(os.Stderr, "durationQueryZigVersion", durationQueryZigVersion)
 			fmt.Fprintln(os.Stderr, "durationDownloadZig", durationDownloadZig)
 			fmt.Fprintln(os.Stderr, "durationExtractZig", durationExtractZig)
 			fmt.Fprintln(os.Stderr, "durationRunZigHelp", durationRunZigHelp)