diff --git a/org.eclipse.xtext.dev-bom/pom.xml b/org.eclipse.xtext.dev-bom/pom.xml
index 717cef202ec..7bf71f779d3 100644
--- a/org.eclipse.xtext.dev-bom/pom.xml
+++ b/org.eclipse.xtext.dev-bom/pom.xml
@@ -158,17 +158,17 @@
 			<dependency>
 				<groupId>com.google.guava</groupId>
 				<artifactId>guava-gwt</artifactId>
-				<version>33.3.1-jre</version>
+				<version>33.4.0-jre</version>
 			</dependency>
 			<dependency>
 				<groupId>com.google.guava</groupId>
 				<artifactId>guava-testlib</artifactId>
-				<version>33.3.1-jre</version>
+				<version>33.4.0-jre</version>
 			</dependency>
 			<dependency>
 				<groupId>com.google.guava</groupId>
 				<artifactId>guava</artifactId>
-				<version>33.3.1-jre</version>
+				<version>33.4.0-jre</version>
 			</dependency>
 			<dependency>
 				<groupId>com.google.inject</groupId>