diff --git a/CHANGELOG b/CHANGELOG
index 4a4f833..1ee9ab3 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -6,6 +6,7 @@ CHANGELOG
 
 * EmptyLineSeparator: disabled
 * Upgrade `tiles-maven-plugin` to 2.11
+* Upgrade `checkstyle` to 8.9
 
 4.1.0
 -----
diff --git a/builder/pom.xml b/builder/pom.xml
index 5cfb7dc..6514c05 100644
--- a/builder/pom.xml
+++ b/builder/pom.xml
@@ -22,7 +22,7 @@
         <tiles-maven-plugin.version>2.11</tiles-maven-plugin.version>
         <kemitix-tiles.version>0.8.1</kemitix-tiles.version>
 
-        <checkstyle.version>8.7</checkstyle.version>
+        <checkstyle.version>8.9</checkstyle.version>
         <sevntu.version>1.27.0</sevntu.version>
         <lombok.version>1.16.20</lombok.version>
         <spring-platform.version>Brussels-SR6</spring-platform.version>
diff --git a/regressions/pom.xml b/regressions/pom.xml
index 9f83fe9..0e4b85d 100644
--- a/regressions/pom.xml
+++ b/regressions/pom.xml
@@ -20,7 +20,7 @@
         <kemitix-tiles.version>0.8.1</kemitix-tiles.version>
 
         <java.version>1.8</java.version>
-        <checkstyle.version>8.7</checkstyle.version>
+        <checkstyle.version>8.9</checkstyle.version>
         <sevntu.version>1.27.0</sevntu.version>
         <maven-checkstyle-plugin.version>3.0.0</maven-checkstyle-plugin.version>
         <kemitix.checkstyle.ruleset.version>${project.version}</kemitix.checkstyle.ruleset.version>
diff --git a/tile/tile.xml b/tile/tile.xml
index 9229eda..842405a 100644
--- a/tile/tile.xml
+++ b/tile/tile.xml
@@ -1,7 +1,7 @@
 <project>
     <properties>
         <maven-checkstyle-plugin.version>3.0.0</maven-checkstyle-plugin.version>
-        <checkstyle.version>8.7</checkstyle.version>
+        <checkstyle.version>8.9</checkstyle.version>
         <sevntu.version>1.27.0</sevntu.version>
         <kemitix.checkstyle.ruleset.version>4.0.1</kemitix.checkstyle.ruleset.version>
         <kemitix.checkstyle.ruleset.level>5-complexity</kemitix.checkstyle.ruleset.level>