diff --git a/src/main.c b/src/main.c
index f8a0a3d..feb6467 100644
--- a/src/main.c
+++ b/src/main.c
@@ -428,7 +428,7 @@ Translated load_argon_file(char *path, ArErr *err) {
   hashmap_free(translated.constants.hashmap, NULL);
   Translated gc_translated = {
       translated.registerCount, NULL, {}, {}, translated.path};
-  gc_translated.bytecode.data = ar_alloc(translated.bytecode.capacity);
+  gc_translated.bytecode.data = ar_alloc_atomic(translated.bytecode.capacity);
   memcpy(gc_translated.bytecode.data, translated.bytecode.data,
          translated.bytecode.capacity);
   gc_translated.bytecode.element_size = translated.bytecode.element_size;
@@ -436,7 +436,7 @@ Translated load_argon_file(char *path, ArErr *err) {
   gc_translated.bytecode.resizable = false;
   gc_translated.bytecode.capacity =
       translated.bytecode.size * translated.bytecode.element_size;
-  gc_translated.constants.data = ar_alloc(translated.constants.capacity);
+  gc_translated.constants.data = ar_alloc_atomic(translated.constants.capacity);
   memcpy(gc_translated.constants.data, translated.constants.data,
          translated.constants.capacity);
   gc_translated.constants.size = translated.constants.size;
diff --git a/src/runtime/objects/number/number.c b/src/runtime/objects/number/number.c
index 5e4f2f2..41946ac 100644
--- a/src/runtime/objects/number/number.c
+++ b/src/runtime/objects/number/number.c
@@ -359,7 +359,7 @@ void create_ARGON_NUMBER_TYPE() {
 void mpz_init_gc_managed(mpz_t z, size_t limbs_count) {
   z->_mp_alloc = limbs_count;
   z->_mp_size = 0;
-  z->_mp_d = ar_alloc(limbs_count * sizeof(mp_limb_t));
+  z->_mp_d = ar_alloc_atomic(limbs_count * sizeof(mp_limb_t));
 }
 
 void mpq_init_gc_managed(mpq_t q, size_t num_limbs, size_t den_limbs) {