diff --git a/pom.xml b/pom.xml
index 36456cb..c5b830e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,8 +4,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <properties>
-        <java.version>1.8</java.version>
-        <kemitix-checkstyle.version>4.0.1</kemitix-checkstyle.version>
+        <kemitix-checkstyle.version>4.1.1</kemitix-checkstyle.version>
         <kemitix.checkstyle.ruleset.level>5-complexity</kemitix.checkstyle.ruleset.level>
         <jacoco-class-line-covered-ratio>1</jacoco-class-line-covered-ratio>
         <jacoco-class-instruction-covered-ratio>1</jacoco-class-instruction-covered-ratio>
@@ -13,17 +12,17 @@
         <pitest.coverage>100</pitest.coverage>
         <pitest.mutation>100</pitest.mutation>
         <junit.version>4.12</junit.version>
-        <assertj.version>3.9.1</assertj.version>
+        <assertj.version>3.10.0</assertj.version>
         <coveralls-maven-plugin.version>4.3.0</coveralls-maven-plugin.version>
-        <tiles-maven-plugin.version>2.10</tiles-maven-plugin.version>
-        <kemitix-tiles.version>0.8.1</kemitix-tiles.version>
-        <lombok.version>1.16.20</lombok.version>
+        <tiles-maven-plugin.version>2.11</tiles-maven-plugin.version>
+        <kemitix-tiles.version>0.9.0</kemitix-tiles.version>
+        <lombok.version>1.18.0</lombok.version>
     </properties>
 
     <parent>
         <groupId>net.kemitix</groupId>
         <artifactId>kemitix-parent</artifactId>
-        <version>5.1.0</version>
+        <version>5.1.1</version>
         <relativePath/>
     </parent>
     <artifactId>conditional</artifactId>
diff --git a/src/main/java/net/kemitix/conditional/Value.java b/src/main/java/net/kemitix/conditional/Value.java
index c07737a..8837095 100644
--- a/src/main/java/net/kemitix/conditional/Value.java
+++ b/src/main/java/net/kemitix/conditional/Value.java
@@ -100,7 +100,7 @@ public interface Value {
      *
      * @param <T> the type of the value
      */
-    interface ValueClause<T> {
+    /* default */ interface ValueClause<T> {
 
         /**
          * Create a {@link ValueSupplier} with the {@link Supplier} should the {@link ValueClause} be true.
@@ -157,7 +157,7 @@ public interface Value {
          *
          * @param <T> the type of the value
          */
-        interface ValueSupplier<T> {
+        /* default */ interface ValueSupplier<T> {
 
             /**
              * Determine the value by whether the {@link ValueClause} was true or false.