diff --git a/macOS/build.sh b/macOS/build.sh
index 2539c52a9..a661fd486 100755
--- a/macOS/build.sh
+++ b/macOS/build.sh
@@ -22,8 +22,8 @@ set -ex
 ROOTDIR=$(pwd)/..
 
 # Set the compilers
-CC=gcc-9
-CXX=g++-9
+CC=gcc-10
+CXX=g++-10
 
 # Set the number of threads
 NTHREADS=$(nproc)
diff --git a/preprocessor b/preprocessor
index c6ad212c8..64ebb3629 160000
--- a/preprocessor
+++ b/preprocessor
@@ -1 +1 @@
-Subproject commit c6ad212c8a068f68b12b161b7d0301c3ef1619a9
+Subproject commit 64ebb3629080fa7f8542f6805478911d1fae15f2