diff --git a/Gemfile b/Gemfile
index a74c6ed43..185c0f977 100644
--- a/Gemfile
+++ b/Gemfile
@@ -49,7 +49,7 @@ gem "yabeda-prometheus-mmap"
 gem "yabeda-puma-plugin"
 gem "yabeda-rails"
 gem "webrick" # required for yabeda-prometheus metrics server
-gem "prometheus-client-mmap", "~> 1.1"
+gem "prometheus-client-mmap", "~> 1.3"
 gem "autotuner"
 gem "benchmark" # indirect dependency, being removed from Ruby 3.5 stdlib so here to quash warnings
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 5fd435316..ab5153e53 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -346,31 +346,31 @@ GEM
       prettyprint
     prettyprint (0.2.0)
     prism (1.6.0)
-    prometheus-client-mmap (1.2.10)
+    prometheus-client-mmap (1.3.0)
       base64
       bigdecimal
       logger
-      rb_sys (~> 0.9.109)
-    prometheus-client-mmap (1.2.10-arm64-darwin)
+      rb_sys (~> 0.9.117)
+    prometheus-client-mmap (1.3.0-arm64-darwin)
       base64
       bigdecimal
       logger
-      rb_sys (~> 0.9.109)
-    prometheus-client-mmap (1.2.10-x86_64-darwin)
+      rb_sys (~> 0.9.117)
+    prometheus-client-mmap (1.3.0-x86_64-darwin)
       base64
       bigdecimal
       logger
-      rb_sys (~> 0.9.109)
-    prometheus-client-mmap (1.2.10-x86_64-linux-gnu)
+      rb_sys (~> 0.9.117)
+    prometheus-client-mmap (1.3.0-x86_64-linux-gnu)
       base64
       bigdecimal
       logger
-      rb_sys (~> 0.9.109)
-    prometheus-client-mmap (1.2.10-x86_64-linux-musl)
+      rb_sys (~> 0.9.117)
+    prometheus-client-mmap (1.3.0-x86_64-linux-musl)
       base64
       bigdecimal
       logger
-      rb_sys (~> 0.9.109)
+      rb_sys (~> 0.9.117)
     propshaft (1.3.1)
       actionpack (>= 7.0.0)
       activesupport (>= 7.0.0)
@@ -604,7 +604,7 @@ DEPENDENCIES
   mocha
   net-http-persistent
   platform_agent
-  prometheus-client-mmap (~> 1.1)
+  prometheus-client-mmap (~> 1.3)
   propshaft
   puma (>= 5.0)
   queenbee!