diff --git a/shard.lock b/shard.lock
index 951b52d..2ee5e57 100644
--- a/shard.lock
+++ b/shard.lock
@@ -10,5 +10,5 @@ shards:
 
   amqp-client:
     git: https://github.com/cloudamqp/amqp-client.cr.git
-    version: 1.2.2
+    version: 1.2.3
 
diff --git a/shard.yml b/shard.yml
index 5b31973..85f6fbf 100644
--- a/shard.yml
+++ b/shard.yml
@@ -18,6 +18,5 @@ development_dependencies:
   ameba:
     github: crystal-ameba/ameba
 
-crystal: 1.9.2
-
+crystal: 1.12.1
 license: MIT
diff --git a/spec/amqproxy_spec.cr b/spec/amqproxy_spec.cr
index 42806d0..7936981 100644
--- a/spec/amqproxy_spec.cr
+++ b/spec/amqproxy_spec.cr
@@ -195,7 +195,6 @@ describe AMQProxy::Server do
           sleep 1
         end
       rescue ex
-        puts ex.message
         # ex.message.should be "Error reading socket: Connection reset by peer"
         wait_for_channel.send(4) # send 4
       end