diff --git a/src/addrman_impl.h b/src/addrman_impl.h
index fcc1d8d7786f1a..a3246da0eeb95d 100644
--- a/src/addrman_impl.h
+++ b/src/addrman_impl.h
@@ -32,8 +32,12 @@ static constexpr int ADDRMAN_NEW_BUCKET_COUNT{1 << ADDRMAN_NEW_BUCKET_COUNT_LOG2
 static constexpr int32_t ADDRMAN_BUCKET_SIZE_LOG2{6};
 static constexpr int ADDRMAN_BUCKET_SIZE{1 << ADDRMAN_BUCKET_SIZE_LOG2};
 
-/** User-defined type for the internally used nIds */
-using nid_type = int;
+/**
+ * User-defined type for the internally used nIds
+ * This used to be int, making it feasible for attackers to cause an overflow,
+ * see https://bitcoincore.org/en/2024/07/31/disclose-addrman-int-overflow/
+ */
+using nid_type = int64_t;
 
 /**
  * Extended statistics about a CAddress