diff --git a/src/main/java/org/kohsuke/github/GHContent.java b/src/main/java/org/kohsuke/github/GHContent.java
index 88a551736..8b6f6fea5 100644
--- a/src/main/java/org/kohsuke/github/GHContent.java
+++ b/src/main/java/org/kohsuke/github/GHContent.java
@@ -78,7 +78,7 @@ public class GHContent {
      */
     @SuppressFBWarnings("DM_DEFAULT_ENCODING")
     public String getContent() throws IOException {
-        return new String(DatatypeConverter.parseBase64Binary(getEncodedContent()));
+        return new String(Base64.decodeBase64(getEncodedContent()));
     }
 
     /**
@@ -179,7 +179,7 @@ public class GHContent {
     }
 
     public GHContentUpdateResponse update(byte[] newContentBytes, String commitMessage, String branch) throws IOException {
-        String encodedContent = DatatypeConverter.printBase64Binary(newContentBytes);
+        String encodedContent = Base64.encodeBase64String(newContentBytes);
 
         Requester requester = new Requester(root)
             .with("path", path)
diff --git a/src/main/java/org/kohsuke/github/GHRepository.java b/src/main/java/org/kohsuke/github/GHRepository.java
index c74d9095a..326564e52 100644
--- a/src/main/java/org/kohsuke/github/GHRepository.java
+++ b/src/main/java/org/kohsuke/github/GHRepository.java
@@ -26,9 +26,9 @@ package org.kohsuke.github;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.infradna.tool.bridge_method_injector.WithBridgeMethods;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import org.apache.commons.codec.binary.Base64;
 import org.apache.commons.lang.StringUtils;
 
-import javax.xml.bind.DatatypeConverter;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStreamReader;
@@ -36,7 +36,19 @@ import java.io.InterruptedIOException;
 import java.io.Reader;
 import java.io.UnsupportedEncodingException;
 import java.net.URL;
-import java.util.*;
+import java.util.AbstractSet;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeMap;
 
 import static java.util.Arrays.asList;
 
@@ -1165,7 +1177,7 @@ public class GHRepository extends GHObject {
         Requester requester = new Requester(root)
             .with("path", path)
             .with("message", commitMessage)
-            .with("content", DatatypeConverter.printBase64Binary(contentBytes))
+            .with("content", Base64.encodeBase64String(contentBytes))
             .method("PUT");
 
         if (branch != null) {