diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index bc8954d..a0f1c87 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        qt_version: ['6.8.3']
+        qt_version: ['6.10.3']
     # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
     # You can convert this to a matrix build if you need cross-platform coverage.
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
diff --git a/hekatoolslib/exportNPY.cpp b/hekatoolslib/exportNPY.cpp
index 651a30d..2b07766 100644
--- a/hekatoolslib/exportNPY.cpp
+++ b/hekatoolslib/exportNPY.cpp
@@ -121,6 +121,8 @@ namespace hkLib {
     void NPYorBINExportTrace(std::istream& datafile, hkTreeNode& TrRecord, std::filesystem::path filename, bool createJSON = true)
     {
         assert(TrRecord.getLevel() == hkTreeNode::LevelTrace);
+        locale_manager lm;
+        lm.setLocale("C");
         auto yunit = TrRecord.getString(TrYUnit);
         auto xunit = TrRecord.getString(TrXUnit);
         auto x0 = TrRecord.extractLongReal(TrXStart);
@@ -140,8 +142,6 @@ namespace hkLib {
         }
 
         if (createJSON) {
-            locale_manager lm;
-            lm.setLocale("C");
             filename.replace_extension("json");
             std::ofstream jsonfile(filename);
             if (!jsonfile) {