diff --git a/oeffi/build.gradle b/oeffi/build.gradle
index 2f7d2ee..5045f3e 100644
--- a/oeffi/build.gradle
+++ b/oeffi/build.gradle
@@ -22,7 +22,7 @@ dependencies {
     implementation 'com.squareup.okhttp3:okhttp:3.12.13'
     //noinspection GradleDependency
     implementation 'com.squareup.okhttp3:logging-interceptor:3.12.13'
-    implementation 'com.google.guava:guava:30.1.1-android'
+    implementation 'com.google.guava:guava:31.0.1-android'
     implementation 'org.osmdroid:osmdroid-android:6.1.11'
     implementation 'org.slf4j:slf4j-api:1.7.32'
     implementation 'com.github.tony19:logback-android:2.0.0'