diff --git a/test/lang/ruby/Gemfile b/test/lang/ruby/Gemfile
index d28c3c0456c87..13c5746d68799 100644
--- a/test/lang/ruby/Gemfile
+++ b/test/lang/ruby/Gemfile
@@ -1,3 +1,3 @@
 source "https://rubygems.org"
-gem "pg", "~> 1.6.2"
+gem "pg", "~> 1.6.3"
 gem "test-unit", "~> 3.6.1"
diff --git a/test/lang/ruby/Gemfile.lock b/test/lang/ruby/Gemfile.lock
index c6edebdcdd4ec..7f1a21c453cc5 100644
--- a/test/lang/ruby/Gemfile.lock
+++ b/test/lang/ruby/Gemfile.lock
@@ -1,9 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    pg (1.6.2-aarch64-linux)
-    pg (1.6.2-arm64-darwin)
-    pg (1.6.2-x86_64-linux)
+    pg (1.6.3-aarch64-linux)
+    pg (1.6.3-arm64-darwin)
+    pg (1.6.3-x86_64-linux)
     power_assert (2.0.3)
     test-unit (3.6.1)
       power_assert
@@ -14,7 +14,7 @@ PLATFORMS
   x86_64-linux-gnu
 
 DEPENDENCIES
-  pg (~> 1.6.2)
+  pg (~> 1.6.3)
   test-unit (~> 3.6.1)
 
 BUNDLED WITH