diff --git a/src/rasteriser/main.c b/src/rasteriser/main.c
index a8e089c..fb818b6 100644
--- a/src/rasteriser/main.c
+++ b/src/rasteriser/main.c
@@ -27,7 +27,7 @@ int main(void) {
   }
 
   Arena *arena = NULL;
-  u64 main_arena_capacity = 20ull * 1024ull * 1024ull * 1024ull;
+  u64 main_arena_capacity = 64ull * 1024ull * 1024ull * 1024ull;
   if (!wapp_mem_arena_init(&arena, main_arena_capacity, WAPP_MEM_ALLOC_RESERVE,
                            false)) {
     return EXIT_FAILURE;
@@ -143,7 +143,7 @@ int main(void) {
   // i32 h_max = (i32)window.half_height;
 
   Arena *frame_arena = NULL;
-  u64 frame_arena_capacity = 10ull * 1024ull * 1024ull * 1024ull;
+  u64 frame_arena_capacity = 32ull * 1024ull * 1024ull * 1024ull;
   if (!wapp_mem_arena_init(&frame_arena, frame_arena_capacity,
                            WAPP_MEM_ALLOC_RESERVE, false)) {
     return EXIT_FAILURE;