diff --git a/downloads/hdf4/hdf4_3_1.md b/downloads/hdf4/hdf4_3_1.md
index 7cdc2493..6b3b49aa 100644
--- a/downloads/hdf4/hdf4_3_1.md
+++ b/downloads/hdf4/hdf4_3_1.md
@@ -10,10 +10,10 @@ title: HDF 4.3.1
 
 | Version | HDF 4.3.1 |
 | Release Date | 6/30/2025 |
-| Additional Release Information | [Release Notes](https://github.com/HDFGroup/hdf4/tree/hdf4.3.1/release_notes/RELEASE.txt) | 
+| Additional Release Information | [Release Notes](https://github.com/HDFGroup/hdf4/blob/hdf4.3.1/release_notes/RELEASE.txt) | 
 || [Newsletter Announcement](https://www.hdfgroup.org/2025/06/release-of-hdf-4-3-1-newsletter-206/) | 
-|| [Compatibility Report for 4.3.1 vs 4.3.0](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1-vs-hdf4.3.0-interface_compatibility_report.html)
-|| [Compatibility Report for 4.3.1 vs 4.3.0 - Java-interface](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1-vs-hdf4.3.0-java-interface_compatibility_report.html) | 
+| Compatibility Reports for 4.3.1 vs 4.3.0 | [C library](https://support.hdfgroup.org/releases/hdf4/v4_3/v4_3_1/downloads/hdf4.3.1-vs-hdf4.3.0-interface_compatibility_report.html)
+| | [Java library](https://support.hdfgroup.org/releases/hdf4/v4_3/v4_3_1/downloads/hdf4.3.1-vs-hdf4.3.0-java-interface_compatibility_report.html)
 
 ## Downloads
 
@@ -22,10 +22,10 @@ Applications that were created with earlier HDF4 releases AND employed internal
 
 |  File  |  Type |
 | ----- | ---- | --------------------- |
-| [hdf4.3.1.tar.gz](https://github.com/HDFGroup/hdf4/archive/refs/tags/hdf4.3.1.tar.gz) | Source release   |
-| [hdf4.3.1.zip](https://github.com/HDFGroup/hdf4/archive/refs/tags/hdf4.3.1.zip) | Source release    |
+| [hdf4.3.1.tar.gz](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1.tar.gz) | Source release   |
+| [hdf4.3.1.zip](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1.zip) | Source release    |
 | [Ready to use Binaries](https://github.com/HDFGroup/hdf4/releases/tag/hdf4.3.1)  | Pre-built binary distributions for Unix and Windows |
-| [sha256](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/sha256sums.txt) | Checksum file   |
+| [sha256](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1.sha256sums.txt) | Checksum file   |
 
 Please refer to [Build Instructions](https://github.com/HDFGroup/hdf4/blob/hdf4.3.1/release_notes/INSTALL) for building with either CMake or Autotools.