diff --git a/spanner/Gemfile.lock b/spanner/Gemfile.lock
index 198c6c072..0fb2e29db 100644
--- a/spanner/Gemfile.lock
+++ b/spanner/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
       public_suffix (>= 2.0.2, < 8.0)
     base64 (0.3.0)
     bigdecimal (3.3.1)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     declarative (0.0.20)
     diff-lcs (1.5.1)
     faraday (2.14.1)