diff --git a/.classpath b/.classpath
index 8bbf1e93f..6b18d81e5 100644
--- a/.classpath
+++ b/.classpath
@@ -86,7 +86,7 @@
 	<classpathentry kind="lib" path="lib/lucene-suggest-5.5.1.jar"/>
 	<classpathentry kind="lib" path="lib/lucene-backward-codecs-5.5.1.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
-	<classpathentry kind="lib" path="lib/icu4j-56_1.jar"/>
+	<classpathentry kind="lib" path="lib/icu4j-57_1.jar"/>
 	<classpathentry kind="lib" path="lib/htmllexer.jar"/>
 	<classpathentry kind="lib" path="lib/jsoup-1.9.1.jar"/>
 	<classpathentry kind="lib" path="lib/javax.servlet-api-3.1.0.jar"/>
diff --git a/build.xml b/build.xml
index 135b9ee80..74df0a44e 100644
--- a/build.xml
+++ b/build.xml
@@ -179,7 +179,7 @@
         <pathelement location="${lib}/httpclient-4.5.2.jar" />
         <pathelement location="${lib}/httpcore-4.4.4.jar" />
         <pathelement location="${lib}/httpmime-4.5.2.jar" />
-        <pathelement location="${lib}/icu4j-56_1.jar" />
+        <pathelement location="${lib}/icu4j-57_1.jar" />
     	<pathelement location="${lib}/imageio-bmp-3.2.1.jar" />
     	<pathelement location="${lib}/imageio-core-3.2.1.jar" />
     	<pathelement location="${lib}/imageio-metadata-3.2.1.jar" />
diff --git a/lib/icu4j-56_1.jar b/lib/icu4j-57_1.jar
similarity index 58%
rename from lib/icu4j-56_1.jar
rename to lib/icu4j-57_1.jar
index 226307953..e6151ce45 100644
Binary files a/lib/icu4j-56_1.jar and b/lib/icu4j-57_1.jar differ
diff --git a/pom.xml b/pom.xml
index 3b51c9d06..51d17b892 100644
--- a/pom.xml
+++ b/pom.xml
@@ -377,7 +377,7 @@
         <dependency>
             <groupId>com.ibm.icu</groupId>
             <artifactId>icu4j</artifactId>
-            <version>56.1</version>
+            <version>57.1</version>
         </dependency>
         <dependency>
             <groupId>com.twelvemonkeys.imageio</groupId>