diff --git a/.DS_Store b/.DS_Store
index ddadb5a..fcc83f6 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/CRAN-SUBMISSION b/CRAN-SUBMISSION
index ee3f2aa..faaf4cb 100644
--- a/CRAN-SUBMISSION
+++ b/CRAN-SUBMISSION
@@ -1,3 +1,4 @@
 Version: 2.1.1
-Date: 2023-03-19 18:05:26 UTC
-SHA: 63c63044c603a3dea744a8e3d502e91b2f224294
+Date: 2023-03-20 00:43:40 UTC
+SHA:
+    d4ccb3c3f133c307be5c4c36570986f05c7cb1b3
diff --git a/src/Makevars b/src/Makevars
index 33f2090..600cee2 100644
--- a/src/Makevars
+++ b/src/Makevars
@@ -1,4 +1,4 @@
-CXX_STD = CXX11
+CXX_STD = 
 
 PKG_CXXFLAGS = $(SHLIB_OPENMP_CXXFLAGS) 
 PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS) $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)
diff --git a/src/Makevars.win b/src/Makevars.win
index 33f2090..600cee2 100644
--- a/src/Makevars.win
+++ b/src/Makevars.win
@@ -1,4 +1,4 @@
-CXX_STD = CXX11
+CXX_STD = 
 
 PKG_CXXFLAGS = $(SHLIB_OPENMP_CXXFLAGS) 
 PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS) $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)