diff --git a/Cargo.lock b/Cargo.lock
index 0432c50..cf65ef9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1726,6 +1726,7 @@ dependencies = [
  "serde_json",
  "serde_yaml",
  "structopt",
+ "tokio",
  "url",
 ]
 
@@ -3282,9 +3283,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.8.1"
+version = "1.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98c8b05dc14c75ea83d63dd391100353789f5f24b8b3866542a5e85c8be8e985"
+checksum = "70e992e41e0d2fb9f755b37446f20900f64446ef54874f40a60c78f021ac6144"
 dependencies = [
  "autocfg",
  "bytes",
@@ -3302,9 +3303,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "1.2.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c49e3df43841dafb86046472506755d8501c5615673955f6aa17181125d13c37"
+checksum = "c9efc1aba077437943f7515666aa2b882dfabfbfdf89c819ea75a8d6e9eaba5e"
 dependencies = [
  "proc-macro2 1.0.27",
  "quote 1.0.9",
diff --git a/Cargo.toml b/Cargo.toml
index 246c65e..c96a522 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,3 +31,4 @@ structopt = "0.3.23"
 md5 = "0.7.0"
 mongodb = { version = "2.0.0-beta", features = ["bson-u2i"] }
 bson = "2.0.0-beta"
+tokio = "1.14.0"
diff --git a/charts/matrixbot-ack/Chart.yaml b/charts/matrixbot-ack/Chart.yaml
index dcf58cc..f1044c4 100644
--- a/charts/matrixbot-ack/Chart.yaml
+++ b/charts/matrixbot-ack/Chart.yaml
@@ -1,4 +1,4 @@
 description: Matrixbot Ack
 name: matrixbot-ack
-version: v0.2.5
+version: v0.2.6
 apiVersion: v2
diff --git a/charts/matrixbot-ack/values.yaml b/charts/matrixbot-ack/values.yaml
index acc3e28..e8f91c2 100644
--- a/charts/matrixbot-ack/values.yaml
+++ b/charts/matrixbot-ack/values.yaml
@@ -2,7 +2,7 @@ environment: production
 
 image:
   repository: web3f/matrixbot-ack
-  tag: v0.2.5
+  tag: v0.2.6
   pullPolicy: IfNotPresent
 
 config:
diff --git a/src/processor.rs b/src/processor.rs
index c1854f2..5994085 100644
--- a/src/processor.rs
+++ b/src/processor.rs
@@ -3,7 +3,8 @@ use crate::matrix::MatrixClient;
 use crate::webhook::Alert;
 use crate::{unix_time, AlertId, Result};
 use actix::prelude::*;
-use std::sync::{Arc, Mutex};
+use tokio::sync::Mutex;
+use std::sync::Arc;
 use std::time::Duration;
 
 const CRON_JOB_INTERVAL: u64 = 5;