diff --git a/example/relayer/Gemfile.lock b/example/relayer/Gemfile.lock
index 0fc6248..7fb81c5 100644
--- a/example/relayer/Gemfile.lock
+++ b/example/relayer/Gemfile.lock
@@ -282,7 +282,7 @@ GEM
       faraday (>= 0.17.5, < 3.a)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    spring (4.2.1)
+    spring (4.3.0)
     stringio (3.1.5)
     thor (1.3.2)
     timeout (0.4.3)
diff --git a/example/subscriber/Gemfile.lock b/example/subscriber/Gemfile.lock
index 0fc6248..7fb81c5 100644
--- a/example/subscriber/Gemfile.lock
+++ b/example/subscriber/Gemfile.lock
@@ -282,7 +282,7 @@ GEM
       faraday (>= 0.17.5, < 3.a)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    spring (4.2.1)
+    spring (4.3.0)
     stringio (3.1.5)
     thor (1.3.2)
     timeout (0.4.3)