diff --git a/extra/bin/update/c3 b/extra/bin/update/c3
index cf8ae7c..35cbeb6 100755
--- a/extra/bin/update/c3
+++ b/extra/bin/update/c3
@@ -10,7 +10,7 @@ cmake -DCMAKE_C_FLAGS="-w" ..
 make -j$(nproc)
 
 mkdir -p /usr/local/c3
-[[ -f c3c ]] && cp c3c /usr/local/c3/
+[[ -f c3c ]] && cp c3c /usr/local/c3/ && cp -R lib /usr/local/c3/lib
 
 cd /
 rm -rf /tmp/c3c
\ No newline at end of file
diff --git a/extra/tests/c3/main.c3 b/extra/tests/c3/main.c3
index fa86e6f..09266f8 100644
--- a/extra/tests/c3/main.c3
+++ b/extra/tests/c3/main.c3
@@ -1,9 +1,8 @@
 module main;
+import std::io;
 
-extern func void printf(char *str, ...);
-
-func int main()
+fn int main()
 {
-    printf("hello, world\n");
+    io::println("hello, world");
     return 0;
 }
\ No newline at end of file