diff --git a/build-gem5 b/build-gem5
index c3dc001..b0af5d6 100755
--- a/build-gem5
+++ b/build-gem5
@@ -126,8 +126,7 @@ https://github.com/cirosantilli/linux-kernel-module-cheat-regression#gem5-unit-t
                     'scons', LF,
                     '-j', str(self.env['nproc']), LF,
                     '--ignore-style', LF,
-                    # https://gem5.atlassian.net/browse/GEM5-365
-                    'USE_HDF5=0', LF,
+                    'USE_HDF5=1', LF,
                 ] +
                 gold_linker_cmd +
                 verbose +
diff --git a/submodules/gem5 b/submodules/gem5
index 4c8efdb..5af2635 160000
--- a/submodules/gem5
+++ b/submodules/gem5
@@ -1 +1 @@
-Subproject commit 4c8efdbef45d98109769cf675ee3411393e8ed06
+Subproject commit 5af26353b532d7b5988cf0f6f3d0fbc5087dd1df