diff --git a/lib/prometheus_exporter/instrumentation/process.rb b/lib/prometheus_exporter/instrumentation/process.rb
index 4ec4bfd..6962448 100644
--- a/lib/prometheus_exporter/instrumentation/process.rb
+++ b/lib/prometheus_exporter/instrumentation/process.rb
@@ -63,6 +63,8 @@ def collect_gc_stats(metric)
       metric[:major_gc_ops_total] = stat[:major_gc_count]
       metric[:minor_gc_ops_total] = stat[:minor_gc_count]
       metric[:allocated_objects_total] = stat[:total_allocated_objects]
+      metric[:malloc_increase_bytes_limit] = stat[:malloc_increase_bytes_limit]
+      metric[:oldmalloc_increase_bytes_limit] = stat[:oldmalloc_increase_bytes_limit]
     end
 
     def collect_v8_stats(metric)
diff --git a/lib/prometheus_exporter/server/process_collector.rb b/lib/prometheus_exporter/server/process_collector.rb
index 6a3a008..baccd4d 100644
--- a/lib/prometheus_exporter/server/process_collector.rb
+++ b/lib/prometheus_exporter/server/process_collector.rb
@@ -13,6 +13,8 @@ class ProcessCollector < TypeCollector
       v8_physical_size: "Physical size consumed by V8 heaps.",
       v8_heap_count: "Number of V8 contexts running.",
       rss: "Total RSS used by process.",
+      malloc_increase_bytes_limit: 'Limit before Ruby triggers a GC against current objects (bytes).',
+      oldmalloc_increase_bytes_limit: 'Limit before Ruby triggers a major GC against old objects (bytes).'
     }
 
     PROCESS_COUNTERS = {