diff --git a/cmd/gsa/entry.go b/cmd/gsa/entry.go
index a548e8f6de..67bb433ab3 100644
--- a/cmd/gsa/entry.go
+++ b/cmd/gsa/entry.go
@@ -66,6 +66,11 @@ func entry() error {
 		return err
 	}
 
+	err = reader.Close()
+	if err != nil {
+		return err
+	}
+
 	if Options.Tui {
 		w, h, err := term.GetSize(os.Stdout.Fd())
 		if err != nil {
diff --git a/internal/diff/load.go b/internal/diff/load.go
index 38937fefad..627eea04f0 100644
--- a/internal/diff/load.go
+++ b/internal/diff/load.go
@@ -71,6 +71,12 @@ func autoLoadFile(name string, options internal.Options) (*commonResult, error)
 	if err != nil {
 		return nil, err
 	}
+	defer func(reader *mmap.ReaderAt) {
+		err = reader.Close()
+		if err != nil {
+			slog.Warn("failed to close file", "error", err)
+		}
+	}(reader)
 
 	r := new(commonResult)
 	if utils.DetectJSON(reader) {
diff --git a/internal/test/test.go b/internal/test/test.go
index f4b374fe4b..805385fd45 100644
--- a/internal/test/test.go
+++ b/internal/test/test.go
@@ -92,6 +92,9 @@ func GetTestResult(t *testing.T) *result.Result {
 
 	f, err := mmap.Open(path)
 	require.NoError(t, err)
+	defer func(f *mmap.ReaderAt) {
+		require.NoError(t, f.Close())
+	}(f)
 
 	r, err := internal.Analyze(path, f, uint64(f.Len()), internal.Options{
 		SkipDwarf:  false,