diff --git a/samples/grpc-client/pom.xml b/samples/grpc-client/pom.xml
index 75babb0..7a6f60f 100644
--- a/samples/grpc-client/pom.xml
+++ b/samples/grpc-client/pom.xml
@@ -105,11 +105,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -122,7 +119,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-oauth2/pom.xml b/samples/grpc-oauth2/pom.xml
index bb33953..7e7ac13 100644
--- a/samples/grpc-oauth2/pom.xml
+++ b/samples/grpc-oauth2/pom.xml
@@ -116,11 +116,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -133,7 +130,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-reactive/pom.xml b/samples/grpc-reactive/pom.xml
index fdf1ccf..3bb2425 100644
--- a/samples/grpc-reactive/pom.xml
+++ b/samples/grpc-reactive/pom.xml
@@ -131,11 +131,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -155,7 +152,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-secure/pom.xml b/samples/grpc-secure/pom.xml
index b775b1c..0e9fbae 100644
--- a/samples/grpc-secure/pom.xml
+++ b/samples/grpc-secure/pom.xml
@@ -109,11 +109,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -126,7 +123,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-server-kotlin/pom.xml b/samples/grpc-server-kotlin/pom.xml
index 266ed75..577943e 100644
--- a/samples/grpc-server-kotlin/pom.xml
+++ b/samples/grpc-server-kotlin/pom.xml
@@ -143,11 +143,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -171,7 +168,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-server-netty-shaded/pom.xml b/samples/grpc-server-netty-shaded/pom.xml
index e495963..15123f4 100644
--- a/samples/grpc-server-netty-shaded/pom.xml
+++ b/samples/grpc-server-netty-shaded/pom.xml
@@ -106,11 +106,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -123,7 +120,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-server/pom.xml b/samples/grpc-server/pom.xml
index 3bbbcd6..b106c17 100644
--- a/samples/grpc-server/pom.xml
+++ b/samples/grpc-server/pom.xml
@@ -112,12 +112,9 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
 					<protocVersion>${protobuf-java.version}</protocVersion>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
 							<groupId>io.grpc</groupId>
@@ -129,7 +126,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-tomcat-secure/pom.xml b/samples/grpc-tomcat-secure/pom.xml
index 4189441..f9ef156 100644
--- a/samples/grpc-tomcat-secure/pom.xml
+++ b/samples/grpc-tomcat-secure/pom.xml
@@ -104,11 +104,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -121,7 +118,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-tomcat/pom.xml b/samples/grpc-tomcat/pom.xml
index 5fc0576..2c09123 100644
--- a/samples/grpc-tomcat/pom.xml
+++ b/samples/grpc-tomcat/pom.xml
@@ -109,11 +109,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -126,7 +123,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>
diff --git a/samples/grpc-webflux/pom.xml b/samples/grpc-webflux/pom.xml
index d76b76a..cfdadb1 100644
--- a/samples/grpc-webflux/pom.xml
+++ b/samples/grpc-webflux/pom.xml
@@ -104,11 +104,8 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.3.1</version>
+				<version>3.4.2</version>
 				<configuration>
-					<sourceDirectories>
-						<sourceDirectory>src/main/proto</sourceDirectory>
-					</sourceDirectories>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>
 						<binaryMavenPlugin>
@@ -121,7 +118,6 @@
 				</configuration>
 				<executions>
 					<execution>
-						<?m2e execute onConfiguration,onIncremental?>
 						<goals>
 							<goal>generate</goal>
 						</goals>