diff --git a/Gemfile.lock b/Gemfile.lock
index bc005b03..2686899c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,11 +6,12 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    async (1.30.3)
+    async (2.6.2)
       console (~> 1.10)
-      nio4r (~> 2.3)
+      fiber-annotation
+      io-event (~> 1.1)
       timers (~> 4.1)
-    async-io (1.34.3)
+    async-io (1.35.0)
       async
     colorize (0.8.1)
     concurrent-ruby (1.2.2)
@@ -25,6 +26,7 @@ GEM
     hana (1.3.7)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    io-event (1.2.2)
     json_schemer (0.2.25)
       ecma-re-validator (~> 0.3)
       hana (~> 1.3)
@@ -32,12 +34,11 @@ GEM
       simpleidn (~> 0.2)
       uri_template (~> 0.7)
     minitest (5.18.0)
-    nio4r (2.5.9)
     rake (13.0.6)
     regexp_parser (2.8.1)
-    rsmp (0.19.5)
-      async (~> 1.30.3)
-      async-io (~> 1.34.3)
+    rsmp (0.20.2)
+      async (~> 2.6.2)
+      async-io (~> 1.35.0)
       colorize (~> 0.8.1)
       rsmp_schema (~> 0.4.0)
       thor (~> 1.2.2)