diff --git a/.github/workflows/build-maven.yml b/.github/workflows/build-maven.yml
index ef12486..289b4e8 100644
--- a/.github/workflows/build-maven.yml
+++ b/.github/workflows/build-maven.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ 11, 14 ]
+        java: [ 11, 15 ]
     steps:
       - uses: kamiazya/setup-graphviz@v1
       - uses: actions/checkout@v2
diff --git a/builder/pom.xml b/builder/pom.xml
index d9ee4f2..4bae716 100644
--- a/builder/pom.xml
+++ b/builder/pom.xml
@@ -21,7 +21,7 @@
         <java.version>11</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <tiles-maven-plugin.version>2.17</tiles-maven-plugin.version>
+        <tiles-maven-plugin.version>2.18</tiles-maven-plugin.version>
         <kemitix-tiles.version>2.7.0</kemitix-tiles.version>
 
         <checkstyle.version>8.36.2</checkstyle.version>
diff --git a/ruleset/pom.xml b/ruleset/pom.xml
index 1775e09..7d12bb7 100644
--- a/ruleset/pom.xml
+++ b/ruleset/pom.xml
@@ -21,7 +21,7 @@
     <url>https://github.com/kemitix/kemitix-checkstyle-ruleset</url>
 
     <properties>
-        <tiles-maven-plugin.version>2.17</tiles-maven-plugin.version>
+        <tiles-maven-plugin.version>2.18</tiles-maven-plugin.version>
         <kemitix-tiles.version>2.7.0</kemitix-tiles.version>
     </properties>
 
diff --git a/tile/pom.xml b/tile/pom.xml
index 6ddc3e5..bd31d8b 100644
--- a/tile/pom.xml
+++ b/tile/pom.xml
@@ -17,7 +17,7 @@
     <packaging>tile</packaging>
 
     <properties>
-        <tiles-maven-plugin.version>2.17</tiles-maven-plugin.version>
+        <tiles-maven-plugin.version>2.18</tiles-maven-plugin.version>
         <kemitix-maven-tiles.version>2.7.0</kemitix-maven-tiles.version>
 
         <maven-checkstyle-plugin.version>3.1.1</maven-checkstyle-plugin.version>