diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 6c6c4f8..24ff93a 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -5,6 +5,16 @@ updates:
     schedule:
       interval: "daily"
     ignore:
+      # Stay on the Maven 3.9.x line
+      - dependency-name: "org.apache.maven:maven-core"
+        versions: [">= 3.10.0"]
+      - dependency-name: "org.apache.maven:maven-model"
+        versions: [">= 3.10.0"]
+      - dependency-name: "org.apache.maven:maven-model-builder"
+        versions: [">= 3.10.0"]
+      # Maven 3.9.x ships Sisu 1.0.0
+      - dependency-name: "org.eclipse.sisu:org.eclipse.sisu.*"
+        versions: [">= 1.1.0"]
       # Maven 3 so use SLF4J 1.7.x
       - dependency-name: "org.slf4j:*"
         versions: [">= 2.0.0"]
diff --git a/pom.xml b/pom.xml
index 614461f..c91cd59 100644
--- a/pom.xml
+++ b/pom.xml
@@ -66,7 +66,7 @@ See the Apache License Version 2.0 for the specific language governing permissio
     <dependency>
       <groupId>org.eclipse.sisu</groupId>
       <artifactId>org.eclipse.sisu.plexus</artifactId>
-      <version>1.1.1</version>
+      <version>1.0.0</version>
       <exclusions>
         <exclusion>
           <groupId>*</groupId>
@@ -77,19 +77,19 @@ See the Apache License Version 2.0 for the specific language governing permissio
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-core</artifactId>
-      <version>3.10.0</version>
+      <version>3.9.16</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-model</artifactId>
-      <version>3.10.0</version>
+      <version>3.9.16</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-model-builder</artifactId>
-      <version>3.10.0</version>
+      <version>3.9.16</version>
       <scope>provided</scope>
     </dependency>