diff --git a/etc/config/c++.amazon.properties b/etc/config/c++.amazon.properties
index eacfd9b59..ef3cfdc48 100644
--- a/etc/config/c++.amazon.properties
+++ b/etc/config/c++.amazon.properties
@@ -1827,9 +1827,11 @@ libs.hdf5.url=https://github.com/HDFGroup/hdf5
 libs.hdf5.versions=1121:1131
 libs.hdf5.versions.1121.version=1.12.1
 libs.hdf5.versions.1121.path=/opt/compiler-explorer/libs/hdf5/hdf5-1_12_1/include
+libs.hdf5.versions.1121.libpath=/opt/compiler-explorer/libs/hdf5/hdf5-1_12_1/lib/x86_64
 libs.hdf5.versions.1121.liblink=hdf5
 libs.hdf5.versions.1131.version=1.13.1
 libs.hdf5.versions.1131.path=/opt/compiler-explorer/libs/hdf5/hdf5-1_13_1/include
+libs.hdf5.versions.1131.libpath=/opt/compiler-explorer/libs/hdf5/hdf5-1_13_1/lib/x86_64
 libs.hdf5.versions.1131.liblink=hdf5
 
 libs.hedley.name=hedley