diff --git a/algorithms-genetic/pom.xml b/algorithms-genetic/pom.xml
index 13fccb4888..56f6a31525 100644
--- a/algorithms-genetic/pom.xml
+++ b/algorithms-genetic/pom.xml
@@ -56,7 +56,7 @@
     <properties>
         <commons-math3.version>3.6.1</commons-math3.version>
         <io.jenetics.version>3.7.0</io.jenetics.version>
-        <org.assertj.core.version>3.14.0</org.assertj.core.version>
+        <org.assertj.core.version>3.9.0</org.assertj.core.version>
         <commons-codec.version>1.11</commons-codec.version>
     </properties>