diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index e1eea1d..217e5c5 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.7.20" />
+    <option name="version" value="1.8.21" />
   </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 5a4a211..3d0386e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlin_version = "1.7.20"
+    ext.kotlin_version = "1.8.21"
     repositories {
         google()
         mavenCentral()
diff --git a/rxSolana/build.gradle b/rxSolana/build.gradle
index cc369ff..0b2c3d9 100644
--- a/rxSolana/build.gradle
+++ b/rxSolana/build.gradle
@@ -55,9 +55,9 @@ dependencies {
     implementation "io.reactivex.rxjava2:rxkotlin:2.4.0"
     implementation 'com.squareup.okhttp3:okhttp:4.9.0'
     implementation "com.squareup.okhttp3:logging-interceptor:4.0.1"
-    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.1.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.4.1'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
     testImplementation 'junit:junit:4.13.2'
 }
 
diff --git a/solana/build.gradle b/solana/build.gradle
index 960e661..fc12ebf 100644
--- a/solana/build.gradle
+++ b/solana/build.gradle
@@ -55,14 +55,14 @@ dependencies {
     implementation 'org.bitcoinj:bitcoinj-core:0.16.2'
     implementation 'net.i2p.crypto:eddsa:0.3.0'
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
     implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
 
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.1'
-    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.1.0'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4'
+    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.4.1'
 
-    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.3.8'
+    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 
 }