diff --git a/tools/heap_profile b/tools/heap_profile
index 4880702..258c785 100755
--- a/tools/heap_profile
+++ b/tools/heap_profile
@@ -86,7 +86,7 @@
 
 CFG_INDENT = '      '
 CFG = '''buffers {{
-  size_kb: 32768
+  size_kb: 63488
 }}
 
 data_sources {{