diff --git a/lxc/executors/c b/lxc/executors/c
index 0cd5424..d3e3662 100755
--- a/lxc/executors/c
+++ b/lxc/executors/c
@@ -1,3 +1,3 @@
 cd /tmp/$2
-timeout -s KILL 10 gcc -o binary -x c code.code
+timeout -s KILL 10 gcc -std=c11 -o binary -x c code.code
 runuser -l runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
diff --git a/lxc/executors/cpp b/lxc/executors/cpp
index 64a5157..d4d351c 100755
--- a/lxc/executors/cpp
+++ b/lxc/executors/cpp
@@ -1,3 +1,3 @@
 cd /tmp/$2
-timeout -s KILL 10 g++ -o binary -x c++ code.code
+timeout -s KILL 10 g++ -std=c++17 -o binary -x c++ code.code
 runuser -l runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"