diff --git a/pom.xml b/pom.xml
index 3dc4e2e..09ea625 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>2.0.0-alpha7</version>
+            <version>2.0.0</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
@@ -27,18 +27,18 @@
         <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-netty-shaded</artifactId>
-            <version>1.47.0</version>
+            <version>1.57.0</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-protobuf</artifactId>
-            <version>1.47.0</version>
+            <version>1.68.1</version>
         </dependency>
         <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-stub</artifactId>
-            <version>1.47.0</version>
+            <version>1.57.0</version>
         </dependency>
         <dependency> <!-- necessary for Java 9+ -->
             <groupId>org.apache.tomcat</groupId>
@@ -58,7 +58,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>31.1-jre</version>
+            <version>32.0.1-android</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/junit/junit -->
@@ -73,7 +73,7 @@
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.30</version>
+            <version>1.32</version>
         </dependency>