diff --git a/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ContentLengthObserver.java b/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ContentLengthObserver.java
index 37ddaa24..b7976afc 100644
--- a/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ContentLengthObserver.java
+++ b/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ContentLengthObserver.java
@@ -33,17 +33,17 @@ public ContentLengthObserver(ResourceBuilder builder) {
     }
 
     @Override
-    void data(int pByte) throws IOException {
+    public void data(int pByte) throws IOException {
         length++;
     }
 
     @Override
-    void data(byte[] pBuffer, int pOffset, int pLength) throws IOException {
+    public void data(byte[] pBuffer, int pOffset, int pLength) throws IOException {
         length += pLength;
     }
 
     @Override
-    void finished() throws IOException {
+    public void finished() throws IOException {
         if (!isFinished()) {
             builder.sizeBytes(this.length);
         }
diff --git a/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/DigestObserver.java b/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/DigestObserver.java
index d772f4af..e1e2ae63 100644
--- a/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/DigestObserver.java
+++ b/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/DigestObserver.java
@@ -65,17 +65,17 @@ public DigestObserver(ResourceBuilder builder, Checksum.OPTS algorithm) {
     }
 
     @Override
-    void data(int pByte) throws IOException {
+    public void data(int pByte) throws IOException {
         digest.update((byte) pByte);
     }
 
     @Override
-    void data(byte[] pBuffer, int pOffset, int pLength) throws IOException {
+    public void data(byte[] pBuffer, int pOffset, int pLength) throws IOException {
         digest.update(pBuffer, pOffset, pLength);
     }
 
     @Override
-    void finished() throws IOException {
+    public void finished() throws IOException {
         if (!isFinished()) {
             byte[] value = this.digest.digest();
             builder.checksum(new ChecksumImpl(algo, value, getEncoder().encodeToString(value), encodeHexString(value)));
diff --git a/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ResourceBuilderObserver.java b/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ResourceBuilderObserver.java
index b1655676..cb027c29 100644
--- a/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ResourceBuilderObserver.java
+++ b/pass-deposit-services/deposit-core/src/main/java/org/apache/commons/io/input/ResourceBuilderObserver.java
@@ -43,7 +43,7 @@ public boolean isFinished() {
     }
 
     @Override
-    void finished() throws IOException {
+    public void finished() throws IOException {
         this.finished = true;
     }
 }
\ No newline at end of file