diff --git a/api/pom.xml b/api/pom.xml
index 49f10d8..ffbeac2 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -71,7 +71,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>29.0-jre</version>
+            <version>30.1-jre</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>
diff --git a/authlib/pom.xml b/authlib/pom.xml
index b21656c..9eb3e7d 100644
--- a/authlib/pom.xml
+++ b/authlib/pom.xml
@@ -29,7 +29,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>29.0-jre</version>
+            <version>30.1-jre</version>
             <scope>provided</scope>
         </dependency>
 
diff --git a/common/pom.xml b/common/pom.xml
index 49d9415..b4d0a36 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -21,7 +21,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>29.0-jre</version>
+            <version>30.1-jre</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>
diff --git a/server/pom.xml b/server/pom.xml
index 7e5286e..340c75b 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -46,7 +46,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>29.0-jre</version>
+            <version>30.1-jre</version>
             <scope>provided</scope>
         </dependency>