diff --git a/cmake_modules/IcebergThirdpartyToolchain.cmake b/cmake_modules/IcebergThirdpartyToolchain.cmake
index 9e0d3d3f5..ce834a682 100644
--- a/cmake_modules/IcebergThirdpartyToolchain.cmake
+++ b/cmake_modules/IcebergThirdpartyToolchain.cmake
@@ -422,7 +422,7 @@ function(resolve_croaring_dependency)
     set(CROARING_URL "$ENV{ICEBERG_CROARING_URL}")
   else()
     set(CROARING_URL
-        "https://github.com/RoaringBitmap/CRoaring/archive/refs/tags/v4.4.3.tar.gz")
+        "https://github.com/RoaringBitmap/CRoaring/archive/refs/tags/v4.7.1.tar.gz")
   endif()
 
   fetchcontent_declare(croaring
diff --git a/src/iceberg/test/roaring_position_bitmap_test.cc b/src/iceberg/test/roaring_position_bitmap_test.cc
index 51f401b18..8dd998efb 100644
--- a/src/iceberg/test/roaring_position_bitmap_test.cc
+++ b/src/iceberg/test/roaring_position_bitmap_test.cc
@@ -19,6 +19,7 @@
 
 #include "iceberg/deletes/roaring_position_bitmap.h"
 
+#include <array>
 #include <cstddef>
 #include <cstdint>
 #include <filesystem>
@@ -387,6 +388,27 @@ TEST(RoaringPositionBitmapTest, TestSerializeDeserializeRoundTrip) {
   AssertEqualContent(copy, {10L, 20L, (int64_t{1} << 32) | 30L});
 }
 
+TEST(RoaringPositionBitmapTest, TestPortableLittleEndianEncoding) {
+  // One bitmap with key 0 and an array container containing position 1.
+  // Check canonical wire bytes: a same-host round trip can hide endian errors.
+  constexpr auto kExpected = std::to_array(
+      "\x01\x00\x00\x00\x00\x00\x00\x00"            // Number of bitmaps.
+      "\x00\x00\x00\x00"                            // Bitmap key.
+      "\x3a\x30\x00\x00\x01\x00\x00\x00"            // Cookie and number of containers.
+      "\x00\x00\x00\x00\x10\x00\x00\x00\x01\x00");  // Array container.
+  const std::string expected(kExpected.data(), kExpected.size() - 1);
+
+  RoaringPositionBitmap bitmap;
+  bitmap.Add(1L);
+  auto serialized = bitmap.Serialize();
+  ASSERT_THAT(serialized, IsOk());
+  EXPECT_EQ(serialized.value(), expected);
+
+  auto deserialized = RoaringPositionBitmap::Deserialize(expected);
+  ASSERT_THAT(deserialized, IsOk());
+  AssertEqualContent(deserialized.value(), {1L});
+}
+
 TEST(RoaringPositionBitmapTest, TestCopyConstructor) {
   RoaringPositionBitmap bitmap;
   bitmap.Add(10L);