diff --git a/cmd/tailscale/depaware.txt b/cmd/tailscale/depaware.txt
index 8ca3b2616..7b8705ba8 100644
--- a/cmd/tailscale/depaware.txt
+++ b/cmd/tailscale/depaware.txt
@@ -192,6 +192,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
         reflect                                                      from crypto/x509+
         regexp                                                       from github.com/coreos/go-iptables/iptables+
         regexp/syntax                                                from regexp
+        runtime/debug                                                from golang.org/x/sync/singleflight
         runtime/pprof                                                from tailscale.com/log/logheap+
         sort                                                         from compress/flate+
         strconv                                                      from compress/flate+