diff --git a/pom.xml b/pom.xml
index acc2d5f..a7dfe8f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,7 +19,7 @@
         <wavefront.version>2.3.0</wavefront.version>
         <kuromoji.version>0.9.0</kuromoji.version>
         <twiiter4j.version>4.0.7</twiiter4j.version>
-        <slackapi.version>1.16.0</slackapi.version>
+        <slackapi.version>1.27.1</slackapi.version>
         <javaxwebsocket.version>1.1</javaxwebsocket.version>
         <tyrus.version>2.1.1</tyrus.version>
     </properties>