diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index de31d1a5..137b3795 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -849,7 +849,7 @@ fi
 # MARCH should iterate the library architectures via flags
 # LIB should iterate the different libraries
 echo "if it fails, please run"
-echo "apt-get install libc6-dev:i386 libgcc-5-dev:i386 libc6-dev-x32 libx32gcc-5-dev libx32gcc-8-dev"
+echo "apt-get install libc6-dev:i386 libgcc-5-dev:i386 libc6-dev-x32 libx32gcc-5-dev libx32gcc-9-dev"
 for SYSTEM in ""; do
     for MARCH in -m64 -m32 -mx32 "-m32 -march=i686"; do
         for LIB in --rtlib=compiler-rt -fsanitize=address -fsanitize=thread -fsanitize=memory -fsanitize=undefined -fsanitize=dataflow; do # -fsanitize=efficiency-working-set; do
@@ -876,7 +876,7 @@ done
 
 echo "If the following fails, try setting an environment variable such as:"
 echo "OBJC_INCLUDE_PATH=/usr/lib/gcc/x86_64-linux-gnu/8/include"
-echo "libobjc-8-dev should be also installed"
+echo "libobjc-9-dev should be also installed"
 echo "#include <objc/objc.h>" > foo.m
 #clang-$VERSION -c foo.m