diff --git a/src/modb_accounting_p.c b/src/modb_accounting_p.c
index c32550c..de6804e 100644
--- a/src/modb_accounting_p.c
+++ b/src/modb_accounting_p.c
@@ -52,12 +52,13 @@ int tableRowsToUsers(column_data **col_data, size_t n_cols,
       freeUsers(users, idx);
       return -1;
     }
-    user->created_on = *(col_created->data.ptr_uint32 + idx);
+
+    user->created_on = *(col_created->data.ptr_int64 + idx);
     if (!columnRowIsNull(col_updated, idx)) {
-      user->updated_on = *(col_updated->data.ptr_uint32 + idx);
+      user->updated_on = *(col_updated->data.ptr_int64 + idx);
     }
     if (!columnRowIsNull(col_deleted, idx)) {
-      user->deleted_on = *(col_deleted->data.ptr_uint32 + idx);
+      user->deleted_on = *(col_deleted->data.ptr_int64 + idx);
     }
 
     *(*users + idx) = user;
@@ -183,12 +184,12 @@ int tableRowsToGroups(column_data **col_data, size_t n_cols,
       return -1;
     }
 
-    group->created_on = *(col_created->data.ptr_uint32 + idx);
+    group->created_on = *(col_created->data.ptr_int64 + idx);
     if (!columnRowIsNull(col_updated, idx)) {
-      group->updated_on = *(col_updated->data.ptr_uint32 + idx);
+      group->updated_on = *(col_updated->data.ptr_int64 + idx);
     }
     if (!columnRowIsNull(col_deleted, idx)) {
-      group->deleted_on = *(col_deleted->data.ptr_uint32 + idx);
+      group->deleted_on = *(col_deleted->data.ptr_int64 + idx);
     }
 
     *(*groups + idx) = group;
diff --git a/src/modb_types.h b/src/modb_types.h
index 2203784..e9214b2 100644
--- a/src/modb_types.h
+++ b/src/modb_types.h
@@ -19,9 +19,9 @@ struct user_t {
   char *email;
   size_t email_len;
 
-  unsigned int created_on;
-  unsigned int updated_on;
-  unsigned int deleted_on;
+  int64_t created_on;
+  int64_t updated_on;
+  int64_t deleted_on;
 
   unsigned int *group_ids;
   struct group_t **groups;
@@ -34,9 +34,9 @@ struct group_t {
   char *name;
   size_t name_len;
 
-  unsigned int created_on;
-  unsigned int updated_on;
-  unsigned int deleted_on;
+  int64_t created_on;
+  int64_t updated_on;
+  int64_t deleted_on;
 
   unsigned int *member_ids;
   struct user_t **members;