diff --git a/.github/workflows/check-go-task.yml b/.github/workflows/check-go-task.yml
index ef017004354..dc34e42c2a4 100644
--- a/.github/workflows/check-go-task.yml
+++ b/.github/workflows/check-go-task.yml
@@ -116,7 +116,7 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v4
         with:
-          version: v1.55
+          version: v1.57
 
       - name: Check style
         env:
diff --git a/.golangci.yml b/.golangci.yml
index 851aa05b92b..a5e99f738fc 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -81,7 +81,7 @@ linters-settings:
 
 issues:
   # Fix found issues (if it's supported by the linter).
-  fix: true
+  fix: false
   # List of regexps of issue texts to exclude.
   #
   # But independently of this option we use default exclude patterns,
diff --git a/commands/instances.go b/commands/instances.go
index 6c2b3e6a931..df1d96f4c41 100644
--- a/commands/instances.go
+++ b/commands/instances.go
@@ -480,7 +480,7 @@ func UpdateIndex(ctx context.Context, req *rpc.UpdateIndexRequest, downloadCB rp
 			downloadCB.Start(u, tr("Downloading index: %s", u))
 			downloadCB.End(false, msg)
 			failed = true
-			result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
+			result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
 			continue
 		}
 
@@ -498,9 +498,9 @@ func UpdateIndex(ctx context.Context, req *rpc.UpdateIndexRequest, downloadCB rp
 				downloadCB.Start(u, tr("Downloading index: %s", filepath.Base(URL.Path)))
 				downloadCB.End(false, msg)
 				failed = true
-				result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
+				result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
 			} else {
-				result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_SKIPPED))
+				result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_SKIPPED))
 			}
 			continue
 		}
@@ -512,14 +512,14 @@ func UpdateIndex(ctx context.Context, req *rpc.UpdateIndexRequest, downloadCB rp
 			downloadCB.Start(u, tr("Downloading index: %s", filepath.Base(URL.Path)))
 			downloadCB.End(false, tr("Invalid index URL: %s", err))
 			failed = true
-			result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
+			result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
 			continue
 		}
 		indexFile := indexpath.Join(indexFileName)
 		if info, err := indexFile.Stat(); err == nil {
 			ageSecs := int64(time.Since(info.ModTime()).Seconds())
 			if ageSecs < req.GetUpdateIfOlderThanSecs() {
-				result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_ALREADY_UP_TO_DATE))
+				result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_ALREADY_UP_TO_DATE))
 				continue
 			}
 		}
@@ -530,9 +530,9 @@ func UpdateIndex(ctx context.Context, req *rpc.UpdateIndexRequest, downloadCB rp
 		}
 		if err := indexResource.Download(indexpath, downloadCB); err != nil {
 			failed = true
-			result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
+			result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_FAILED))
 		} else {
-			result.UpdatedIndexes = append(result.UpdatedIndexes, report(URL, rpc.IndexUpdateReport_STATUS_UPDATED))
+			result.UpdatedIndexes = append(result.GetUpdatedIndexes(), report(URL, rpc.IndexUpdateReport_STATUS_UPDATED))
 		}
 	}
 
diff --git a/internal/cli/feedback/warn_deprecated.go b/internal/cli/feedback/warn_deprecated.go
index af2af4a6a86..0a780574d5e 100644
--- a/internal/cli/feedback/warn_deprecated.go
+++ b/internal/cli/feedback/warn_deprecated.go
@@ -25,13 +25,13 @@ import (
 // WarnAboutDeprecatedFiles warns the user that a type of sketch files are deprecated
 func WarnAboutDeprecatedFiles(s *rpc.Sketch) {
 	var files []string
-	for _, f := range s.OtherSketchFiles {
+	for _, f := range s.GetOtherSketchFiles() {
 		if strings.HasSuffix(f, ".pde") {
 			files = append(files, f)
 		}
 	}
-	if strings.HasSuffix(s.MainFile, ".pde") {
-		files = append(files, s.MainFile)
+	if strings.HasSuffix(s.GetMainFile(), ".pde") {
+		files = append(files, s.GetMainFile())
 	}
 	if len(files) > 0 {
 		// .pde files are still supported but deprecated, this warning urges the user to rename them