diff --git a/vendor.conf b/vendor.conf
index c230ff07ed..a0d19924f9 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -129,7 +129,7 @@ github.com/containerd/cgroups                       44306b6a1d46985d916b48b4199f
 github.com/containerd/console                       8375c3424e4d7b114e8a90a4a40c8e1b40d1d4e6 # v1.0.0
 github.com/containerd/go-runc                       7016d3ce2328dd2cb1192b2076ebd565c4e8df0c
 github.com/containerd/typeurl                       cd3ce7159eae562a4f60ceff37dada11a939d247 # v1.0.1
-github.com/containerd/ttrpc                         0be804eadb152bc3b3c20c5edc314c4633833398 # v1.0.0-16-g0be804e
+github.com/containerd/ttrpc                         72bb1b21c5b0a4a107f59dd85f6ab58e564b68d6 # v1.0.1
 github.com/gogo/googleapis                          01e0f9cca9b92166042241267ee2a5cdf5cff46c # v1.3.2
 github.com/cilium/ebpf                              60c3aa43f488292fe2ee50fb8b833b383ca8ebbb
 
diff --git a/vendor/github.com/containerd/ttrpc/server.go b/vendor/github.com/containerd/ttrpc/server.go
index 1d4f1df653..c18b4e43b2 100644
--- a/vendor/github.com/containerd/ttrpc/server.go
+++ b/vendor/github.com/containerd/ttrpc/server.go
@@ -209,6 +209,20 @@ func (s *Server) addConnection(c *serverConn) {
 	s.connections[c] = struct{}{}
 }
 
+func (s *Server) delConnection(c *serverConn) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	delete(s.connections, c)
+}
+
+func (s *Server) countConnection() int {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	return len(s.connections)
+}
+
 func (s *Server) closeIdleConns() bool {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -313,6 +327,7 @@ func (c *serverConn) run(sctx context.Context) {
 	defer c.conn.Close()
 	defer cancel()
 	defer close(done)
+	defer c.server.delConnection(c)
 
 	go func(recvErr chan error) {
 		defer close(recvErr)