diff --git a/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.2-2023a.yml b/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.2-2023a.yml
index 3fe1e43d3f..5521b92398 100644
--- a/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.2-2023a.yml
+++ b/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.2-2023a.yml
@@ -3,3 +3,4 @@ easyconfigs:
   - foss-2023a.eb
   - SciPy-bundle-2023.07-gfbf-2023a.eb
   - ESPResSo-4.2.2-foss-2023a.eb
+  - ParaView-5.11.2-foss-2023a.eb
diff --git a/eb_hooks.py b/eb_hooks.py
index e6f0cf0dd2..3b381e5963 100644
--- a/eb_hooks.py
+++ b/eb_hooks.py
@@ -81,8 +81,12 @@ def post_ready_hook(self, *args, **kwargs):
     """
     # 'parallel' easyconfig parameter is set via EasyBlock.set_parallel in ready step based on available cores.
     # here we reduce parallellism to only use half of that for selected software,
-    # to avoid failing builds/tests due to out-of-memory problems
-    if self.name in ['TensorFlow', 'libxc']:
+    # to avoid failing builds/tests due to out-of-memory problems;
+    memory_hungry_build = self.name in ['libxc', 'TensorFlow']
+    # on A64FX systems, (HBM) memory is typically scarce, so we need to use fewer cores for some builds
+    cpu_target = get_eessi_envvar('EESSI_SOFTWARE_SUBDIR')
+    memory_hungry_build_a64fx = cpu_target == CPU_TARGET_A64FX and self.name in ['Qt5']
+    if memory_hungry_build or memory_hungry_build_a64fx:
         parallel = self.cfg['parallel']
         if parallel > 1:
             self.cfg['parallel'] = parallel // 2