1 files changed, 6 insertions, 1 deletions
diff --git a/src/node_crypto_bio.h b/src/node_crypto_bio.h
index 380a3a6b4c..dea010fa01 100644
--- a/src/node_crypto_bio.h
+++ b/src/node_crypto_bio.h
@@ -32,7 +32,7 @@
 namespace node {
 namespace crypto {
 
-class NodeBIO {
+class NodeBIO : public MemoryRetainer {
  public:
   NodeBIO() : env_(nullptr),
               initial_(kInitialBufferLength),
@@ -110,6 +110,11 @@ class NodeBIO {
 
   static NodeBIO* FromBIO(BIO* bio);
 
+  void MemoryInfo(MemoryTracker* tracker) const override {
+    tracker->TrackThis(this);
+    tracker->TrackFieldWithSize("buffer", length_);
+  }
+
  private:
   static int New(BIO* bio);
   static int Free(BIO* bio);