diff --git a/internal/adapters/weatherapi/client.go b/internal/adapters/weatherapi/client.go
index 7540c0f..09fb548 100644
--- a/internal/adapters/weatherapi/client.go
+++ b/internal/adapters/weatherapi/client.go
@@ -19,7 +19,6 @@ import (
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/config"
-	"gitea.maximumdirect.net/eric/weatherreporter/internal/fileutil"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
 )
 
@@ -718,10 +717,3 @@ func sourceHash(raw json.RawMessage) (string, error) {
 	sum := sha256.Sum256(compact.Bytes())
 	return hex.EncodeToString(sum[:]), nil
 }
-
-func SaveBundle(path string, bundle *weatherdata.Bundle) error {
-	if err := fileutil.WriteJSONAtomic(path, bundle); err != nil {
-		return fmt.Errorf("save bundle: %w", err)
-	}
-	return nil
-}
diff --git a/internal/adapters/weatherapi/client_test.go b/internal/adapters/weatherapi/client_test.go
index eeea722..1d090ab 100644
--- a/internal/adapters/weatherapi/client_test.go
+++ b/internal/adapters/weatherapi/client_test.go
@@ -1055,27 +1055,6 @@ func TestHTTPTimeout(t *testing.T) {
 	}
 }
 
-func TestSaveBundle(t *testing.T) {
-	server := fixtureServer(t, nil, nil)
-	client := newTestClient(t, server.URL+"/", nil)
-	bundle, err := client.FetchBundle(context.Background())
-	if err != nil {
-		t.Fatalf("FetchBundle() error = %v", err)
-	}
-
-	path := filepath.Join(t.TempDir(), "nested", "bundle.json")
-	if err := SaveBundle(path, bundle); err != nil {
-		t.Fatalf("SaveBundle() error = %v", err)
-	}
-	data, err := os.ReadFile(path)
-	if err != nil {
-		t.Fatalf("read saved bundle: %v", err)
-	}
-	if !strings.Contains(string(data), `"hourly"`) {
-		t.Fatalf("saved bundle missing hourly source:\n%s", string(data))
-	}
-}
-
 type handlerOverride struct {
 	status  int
 	body    string
diff --git a/internal/fileutil/fileutil.go b/internal/fileutil/fileutil.go
index 91161ae..ee2282e 100644
--- a/internal/fileutil/fileutil.go
+++ b/internal/fileutil/fileutil.go
@@ -3,7 +3,6 @@ package fileutil
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -74,11 +73,3 @@ func WriteFileAtomicContext(ctx context.Context, path string, data []byte) error
 	}
 	return nil
 }
-
-func WriteJSONAtomic(path string, value any) error {
-	data, err := json.MarshalIndent(value, "", "  ")
-	if err != nil {
-		return fmt.Errorf("marshal %q: %w", path, err)
-	}
-	return WriteFileAtomic(path, data)
-}
diff --git a/internal/fileutil/fileutil_test.go b/internal/fileutil/fileutil_test.go
index 3288f59..0b30465 100644
--- a/internal/fileutil/fileutil_test.go
+++ b/internal/fileutil/fileutil_test.go
@@ -150,19 +150,3 @@ func TestWriteFileAtomicContextPreservesDestinationWhenCanceledAtPublication(t *
 		t.Fatalf("temporary files/error = %v/%v", matches, globErr)
 	}
 }
-
-func TestWriteJSONAtomic(t *testing.T) {
-	path := filepath.Join(t.TempDir(), "artifact.json")
-
-	if err := WriteJSONAtomic(path, map[string]string{"status": "ok"}); err != nil {
-		t.Fatalf("WriteJSONAtomic() error = %v", err)
-	}
-
-	data, err := os.ReadFile(path)
-	if err != nil {
-		t.Fatalf("ReadFile() error = %v", err)
-	}
-	if string(data) != "{\n  \"status\": \"ok\"\n}" {
-		t.Fatalf("json = %q, want indented object", data)
-	}
-}