diff --git a/shard.yml b/shard.yml
index 668c379..cb14a20 100644
--- a/shard.yml
+++ b/shard.yml
@@ -26,7 +26,7 @@ targets:
   auth-user-search:
     main: utils/authd-user-search.cr
 
-crystal: 0.31
+crystal: 0.35.1
 
 dependencies:
     grok:
diff --git a/src/authd.cr b/src/authd.cr
index b85e1b8..c72e132 100644
--- a/src/authd.cr
+++ b/src/authd.cr
@@ -169,9 +169,9 @@ class AuthD::Response
 	end
 end
 
-class IPC::Connection
-	def send(response : AuthD::Response)
-		send response.type.to_u8, response.to_json
+class IPC::Context
+	def send(fd, response : AuthD::Response)
+		send fd, response.type.to_u8, response.to_json
 	end
 end
 
@@ -369,14 +369,14 @@ class AuthD::Request
 	end
 end
 
-class IPC::Connection
-	def send(request : AuthD::Request)
-		send request.type.to_u8, request.to_json
+class IPC::Context
+	def send(fd, request : AuthD::Request)
+		send fd, request.type.to_u8, request.to_json
 	end
 end
 
 module AuthD
-	class Client < IPC::Connection
+	class Client < IPC::Client
 		property key : String
 
 		def initialize
diff --git a/src/main.cr b/src/main.cr
index ca8b4ab..28272ce 100644
--- a/src/main.cr
+++ b/src/main.cr
@@ -51,7 +51,7 @@ class AuthD::Service
 		uid
 	end
 
-	def handle_request(request : AuthD::Request?, connection : IPC::Connection)
+	def handle_request(request : AuthD::Request?)
 		case request
 		when Request::GetToken
 			begin
@@ -454,7 +454,8 @@ class AuthD::Service
 	def run
 		##
 		# Provides a JWT-based authentication scheme for service-specific users.
-		IPC::Service.new "auth" do |event|
+		server = IPC::Server.new "auth"
+		server.loop do |event|
 			if event.is_a? IPC::Exception
 				puts "oh no"
 				pp! event
@@ -462,15 +463,15 @@ class AuthD::Service
 			end
 
 			case event
-			when IPC::Event::Message
+			when IPC::Event::MessageReceived
 				begin
 					request = Request.from_ipc event.message
 
 					info "<< #{request.class.name.sub /^Request::/, ""}"
 
-					response = handle_request request, event.connection
+					response = handle_request request
 
-					event.connection.send response
+					server.send event.fd, response
 				rescue e : MalformedRequest
 					error "#{e.message}"
 					error " .. type was:    #{e.ipc_type}"