diff --git ivy/ivy.xml ivy/ivy.xml
index e8d93d1..b9b166e 100644
--- ivy/ivy.xml
+++ ivy/ivy.xml
@@ -62,7 +62,7 @@
 		</dependency>
 
 		<dependency org="org.apache.tika" name="tika-core" rev="1.7" />
-		<dependency org="com.ibm.icu" name="icu4j" rev="4.0.1" />
+		<dependency org="com.ibm.icu" name="icu4j" rev="55.1" />
 
 		<dependency org="xerces" name="xercesImpl" rev="2.9.1" />
 		<dependency org="xerces" name="xmlParserAPIs" rev="2.6.2" />
diff --git pom.xml pom.xml
index 708f40c..aaef8b9 100644
--- pom.xml
+++ pom.xml
@@ -157,7 +157,7 @@
                 <dependency>
                         <groupId>com.ibm.icu</groupId>
                         <artifactId>icu4j</artifactId>
-                        <version>4.0.1</version>
+                        <version>55.1</version>
                         <scope>compile</scope>
                 </dependency>
                 <dependency>