diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c36f32..c442293 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+### v3.1.19 (Aug 9, 2022)
+- Improved thread management to reduce total thread count
+
 ### v3.1.18 (Jul 27, 2022)
 - Improved memory management related to network I/O to reduce memory usage
 
diff --git a/README.md b/README.md
index af540eb..af3fd36 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Platform](https://img.shields.io/badge/platform-android-orange.svg)](https://github.com/sendbird/SendBird-SDK-Android)
 [![Languages](https://img.shields.io/badge/language-java-orange.svg)](https://github.com/sendbird/SendBird-SDK-Android)
-[![Maven](https://img.shields.io/badge/maven-v3.1.18-green.svg)](https://github.com/sendbird/SendBird-SDK-Android/tree/master/com/sendbird/sdk/sendbird-android-sdk/3.1.18)
+[![Maven](https://img.shields.io/badge/maven-v3.1.19-green.svg)](https://github.com/sendbird/SendBird-SDK-Android/tree/master/com/sendbird/sdk/sendbird-android-sdk/3.1.19)
 [![Commercial License](https://img.shields.io/badge/license-Commercial-brightgreen.svg)](https://github.com/sendbird/SendBird-SDK-Android/blob/master/LICENSE.md)
 
 ## Table of contents
@@ -94,7 +94,7 @@ Then, add the dependency to the project's top-level `build.gradle` file:
 ```gradle
 dependencies {
     ...
-    implementation 'com.sendbird.sdk:sendbird-android-sdk:3.1.18'
+    implementation 'com.sendbird.sdk:sendbird-android-sdk:3.1.19'
     ...
 }
 ```
@@ -111,7 +111,7 @@ TLS 1.3 support is included in version 3.0.106 of the SendBird Android SDK. TLS
 
 ```gradle
 dependencies {
-    implementation ('com.sendbird.sdk:sendbird-android-sdk:3.1.18') {
+    implementation ('com.sendbird.sdk:sendbird-android-sdk:3.1.19') {
         exclude group: 'org.conscrypt', module: 'conscrypt-android'
     }
 }
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar
new file mode 100644
index 0000000..44b7d46
Binary files /dev/null and b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar differ
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar.md5 b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar.md5
new file mode 100644
index 0000000..149fe09
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar.md5
@@ -0,0 +1 @@
+ec703c7b5cc40b97c1df2bc9f5f871aa
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar.sha1 b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar.sha1
new file mode 100644
index 0000000..90c530f
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19-javadoc.jar.sha1
@@ -0,0 +1 @@
+58b81f6bf47fb0b3ff038d5de2c40af1dd203c38
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar
new file mode 100644
index 0000000..b608d1a
Binary files /dev/null and b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar differ
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar.md5 b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar.md5
new file mode 100644
index 0000000..44ddf30
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar.md5
@@ -0,0 +1 @@
+4722186fdb0cf1c0777c7fcb0ff7271f
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar.sha1 b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar.sha1
new file mode 100644
index 0000000..3e44a8a
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.aar.sha1
@@ -0,0 +1 @@
+a07f33c432f7776c609584e823974d58261618a6
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom
new file mode 100644
index 0000000..4632e81
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.sendbird.sdk</groupId>
+  <artifactId>sendbird-android-sdk</artifactId>
+  <version>3.1.19</version>
+  <packaging>aar</packaging>
+  <name>Sendbird Android SDK</name>
+  <description>Sendbird is simplest solution for chat and messaging. It enables your app to engage and retain your users in real-time.</description>
+  <url>https://www.sendbird.com/</url>
+  <inceptionYear>2016</inceptionYear>
+  <licenses>
+    <license>
+      <name>Sendbird SDK License</name>
+      <url>https://github.com/sendbird/Sendbird-SDK-Android/blob/master/LICENSE.md</url>
+      <distribution>repo</distribution>
+    </license>
+  </licenses>
+  <dependencies>
+    <dependency>
+      <groupId>androidx.annotation</groupId>
+      <artifactId>annotation</artifactId>
+      <version>1.2.0</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.conscrypt</groupId>
+      <artifactId>conscrypt-android</artifactId>
+      <version>2.2.1</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.jetbrains.kotlin</groupId>
+      <artifactId>kotlin-stdlib-jdk7</artifactId>
+      <version>1.4.31</version>
+      <scope>compile</scope>
+    </dependency>
+  </dependencies>
+</project>
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom.md5 b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom.md5
new file mode 100644
index 0000000..1533f95
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom.md5
@@ -0,0 +1 @@
+f6e429bb7caa4b128f875feddb244b3a
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom.sha1 b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom.sha1
new file mode 100644
index 0000000..0b7db89
--- /dev/null
+++ b/com/sendbird/sdk/sendbird-android-sdk/3.1.19/sendbird-android-sdk-3.1.19.pom.sha1
@@ -0,0 +1 @@
+c57796ed3f35ef6138fce20a7970897d546e1dc7
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml b/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml
index 6697f7a..df7d9fc 100644
--- a/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml
+++ b/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml
@@ -3,7 +3,7 @@
   <groupId>com.sendbird.sdk</groupId>
   <artifactId>sendbird-android-sdk</artifactId>
   <versioning>
-    <release>3.1.18</release>
+    <release>3.1.19</release>
     <versions>
       <version>2.0.1</version>
       <version>2.0.2</version>
@@ -228,7 +228,8 @@
       <version>3.1.16</version>
       <version>3.1.17</version>
       <version>3.1.18</version>
+      <version>3.1.19</version>
     </versions>
-    <lastUpdated>20220727041510</lastUpdated>
+    <lastUpdated>20220809014928</lastUpdated>
   </versioning>
 </metadata>
diff --git a/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.md5 b/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.md5
index d837624..9ccc636 100644
--- a/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.md5
+++ b/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.md5
@@ -1 +1 @@
-1f8af83d29191e4b0a9afb9166399766
\ No newline at end of file
+d29c6252b877384b073e77fbbb810d92
\ No newline at end of file
diff --git a/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.sha1 b/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.sha1
index 3f586b2..5db567e 100644
--- a/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.sha1
+++ b/com/sendbird/sdk/sendbird-android-sdk/maven-metadata.xml.sha1
@@ -1 +1 @@
-4ea713bffdbe18318ef1670264cc10ed7b8e3230
\ No newline at end of file
+c1665d00cdac18b0c216193f0ac4ea67308036f1
\ No newline at end of file