diff --git a/build.gradle b/build.gradle
index 5d651d3..78ded12 100644
--- a/build.gradle
+++ b/build.gradle
@@ -58,7 +58,7 @@ dependencies {
     //noinspection GradlePackageUpdate
     api 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.9.0'
     //noinspection GradlePackageUpdate
-    api 'org.jetbrains.kotlinx:kotlinx-coroutines-reactor:1.8.1'
+    api 'org.jetbrains.kotlinx:kotlinx-coroutines-reactor:1.9.0'
     api 'io.github.dkim19375:dkimcore:1.5.0'
     // api 'org.codehaus.groovy:groovy-jsr223:3.0.8'