diff --git a/src/main/java/org/javaswift/joss/headers/object/range/ExcludeStartRange.java b/src/main/java/org/javaswift/joss/headers/object/range/ExcludeStartRange.java
index 32f5f244..901f3643 100644
--- a/src/main/java/org/javaswift/joss/headers/object/range/ExcludeStartRange.java
+++ b/src/main/java/org/javaswift/joss/headers/object/range/ExcludeStartRange.java
@@ -5,7 +5,7 @@
  */
 public class ExcludeStartRange extends AbstractRange {
 
-    public ExcludeStartRange(int offset) {
+    public ExcludeStartRange(long offset) {
         super(offset, -1);
     }
 
diff --git a/src/main/java/org/javaswift/joss/headers/object/range/FirstPartRange.java b/src/main/java/org/javaswift/joss/headers/object/range/FirstPartRange.java
index 29448f47..029e54ac 100644
--- a/src/main/java/org/javaswift/joss/headers/object/range/FirstPartRange.java
+++ b/src/main/java/org/javaswift/joss/headers/object/range/FirstPartRange.java
@@ -4,7 +4,7 @@
  * Take the first bytes of the object until -- ie not including -- position 'until'
  */
 public class FirstPartRange extends AbstractRange {
-    public FirstPartRange(int until) {
+    public FirstPartRange(long until) {
         super(0, until);
     }
 
diff --git a/src/main/java/org/javaswift/joss/headers/object/range/LastPartRange.java b/src/main/java/org/javaswift/joss/headers/object/range/LastPartRange.java
index 67542012..27ffb70e 100644
--- a/src/main/java/org/javaswift/joss/headers/object/range/LastPartRange.java
+++ b/src/main/java/org/javaswift/joss/headers/object/range/LastPartRange.java
@@ -5,7 +5,7 @@
  */
 public class LastPartRange extends AbstractRange {
 
-    public LastPartRange(int lastBytes) {
+    public LastPartRange(long lastBytes) {
         super(-1, lastBytes);
     }
 
diff --git a/src/main/java/org/javaswift/joss/headers/object/range/MidPartRange.java b/src/main/java/org/javaswift/joss/headers/object/range/MidPartRange.java
index c221fd0a..b2db358d 100644
--- a/src/main/java/org/javaswift/joss/headers/object/range/MidPartRange.java
+++ b/src/main/java/org/javaswift/joss/headers/object/range/MidPartRange.java
@@ -5,7 +5,7 @@
  */
 public class MidPartRange extends AbstractRange {
 
-    public MidPartRange(int startPos, int endPos) {
+    public MidPartRange(long startPos, long endPos) {
         super(startPos, endPos);
     }