diff --git a/algorithm-exercises-java/build.gradle b/algorithm-exercises-java/build.gradle
index 8f29d25..7b87a8d 100644
--- a/algorithm-exercises-java/build.gradle
+++ b/algorithm-exercises-java/build.gradle
@@ -48,7 +48,7 @@ tasks.named('test') {
 }
 
 checkstyle {
-    toolVersion = '10.25.1'
+    toolVersion = '10.26.0'
     configFile = file("${rootDir}/checkstyle.xml")
     maxErrors	= 0
     maxWarnings	= 0
diff --git a/algorithm-exercises-java/src/test/java/ae/projecteuler/helper/BigNumTest.java b/algorithm-exercises-java/src/test/java/ae/projecteuler/helper/BigNumTest.java
index 381e4d9..3805a6a 100644
--- a/algorithm-exercises-java/src/test/java/ae/projecteuler/helper/BigNumTest.java
+++ b/algorithm-exercises-java/src/test/java/ae/projecteuler/helper/BigNumTest.java
@@ -148,11 +148,11 @@ class BigNumTest {
     assertArrayEquals(
       new BigNum(
           "10715086071862673209484250490600018105614048117055"
-        + "33607443750388370351051124936122493198378815695858"
-        + "12759467291755314682518714528569231404359845775746"
-        + "98574803934567774824230985421074605062371141877954"
-        + "18215304647498358194126739876755916554394607706291"
-        + "4571196477686542167660429831652624386837205668069376").toArray(),
+          + "33607443750388370351051124936122493198378815695858"
+          + "12759467291755314682518714528569231404359845775746"
+          + "98574803934567774824230985421074605062371141877954"
+          + "18215304647498358194126739876755916554394607706291"
+          + "4571196477686542167660429831652624386837205668069376").toArray(),
       new BigNum("2").bigPower(1000).toArray()
     );