diff --git a/google-cloud-spanner/Gemfile b/google-cloud-spanner/Gemfile
index 5f4ad5ca..183000c4 100644
--- a/google-cloud-spanner/Gemfile
+++ b/google-cloud-spanner/Gemfile
@@ -13,7 +13,7 @@ gem "google-style", "~> 1.32.0"
 gem "grpc", "~> 1.67"
 gem "grpc-tools", "~> 1.74", ">= 1.74.1"
 gem "irb", "~> 1.17"
-gem "minitest", "~> 5.25"
+gem "minitest", "~> 6.0"
 gem "minitest-autotest", "~> 1.0"
 gem "minitest-focus", "~> 1.4"
 gem "minitest-rg", "~> 5.3"
diff --git a/google-cloud-spanner/Gemfile.lock b/google-cloud-spanner/Gemfile.lock
index 3d80f30a..e87ee973 100644
--- a/google-cloud-spanner/Gemfile.lock
+++ b/google-cloud-spanner/Gemfile.lock
@@ -85,7 +85,7 @@ GEM
     google-protobuf (4.35.0-x86_64-linux-musl)
       bigdecimal
       rake (~> 13.3)
-    google-style (1.31.1)
+    google-style (1.32.0)
       rubocop (~> 1.76)
     googleapis-common-protos (1.9.0)
       google-protobuf (~> 4.26)
@@ -145,17 +145,15 @@ GEM
     lint_roller (1.1.0)
     logger (1.7.0)
     method_source (1.1.0)
-    minitest (5.27.0)
-    minitest-autotest (1.2.0)
-      minitest-server (~> 1.0)
-      path_expander (~> 2.0)
+    minitest (6.0.6)
+      drb (~> 2.0)
+      prism (~> 1.5)
+    minitest-autotest (1.2.2)
+      minitest (~> 6.0)
     minitest-focus (1.4.1)
       minitest (> 5.0)
     minitest-rg (5.4.0)
       minitest (>= 5.0, < 7)
-    minitest-server (1.0.10)
-      drb (~> 2.0)
-      minitest (~> 5.16)
     multi_json (1.21.1)
     mutex_m (0.3.0)
     net-http (0.9.1)
@@ -184,7 +182,6 @@ GEM
     parser (3.3.11.1)
       ast (~> 2.4.1)
       racc
-    path_expander (2.0.1)
     pp (0.6.3)
       prettyprint
     prettyprint (0.2.0)
@@ -300,11 +297,11 @@ DEPENDENCIES
   google-cloud-spanner-admin-database-v1 (~> 1.3)
   google-cloud-spanner-admin-instance-v1 (~> 1.5)
   google-cloud-spanner-v1 (~> 1.8)
-  google-style (~> 1.31.0)
+  google-style (~> 1.32.0)
   grpc (~> 1.67)
   grpc-tools (~> 1.74, >= 1.74.1)
   irb (~> 1.17)
-  minitest (~> 5.25)
+  minitest (~> 6.0)
   minitest-autotest (~> 1.0)
   minitest-focus (~> 1.4)
   minitest-rg (~> 5.3)
@@ -352,7 +349,7 @@ CHECKSUMS
   google-protobuf (4.35.0-x86_64-darwin) sha256=05eb5c8bc9899135befff496fc0a3642e7ff3d0943f043841dcc456f5654fea0
   google-protobuf (4.35.0-x86_64-linux-gnu) sha256=999226f3b00cd9fddb1b26851d16060212fa1d90c406aaad47e574682b716059
   google-protobuf (4.35.0-x86_64-linux-musl) sha256=be0218520d77b2aee898b363514b03819f6f63f9c041ae0d0d79b4ce5247bffd
-  google-style (1.31.1) sha256=62680dc303d3fecd9de124cdb4da42dc4c4b2445118baefb5d77aa6411b6b6ff
+  google-style (1.32.0) sha256=3b13068979e5b8caa067ecce9bf818b6cf0e5eb706ead41c5b905f237d9bfb01
   googleapis-common-protos (1.9.0) sha256=207be372d8d25e3876e1e1155d057e14f3c92f8f5428772864a8ce04a0b756e4
   googleapis-common-protos-types (1.23.0) sha256=992e740a523794d9fc5f29a504465d8fc737aaa16c930fe7228e3346860faf0a
   googleauth (1.16.2) sha256=15009502e2e38af71948cda918f230e27d327f6882a1e47967a5a4664930a638
@@ -376,11 +373,10 @@ CHECKSUMS
   lint_roller (1.1.0) sha256=2c0c845b632a7d172cb849cc90c1bce937a28c5c8ccccb50dfd46a485003cc87
   logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203
   method_source (1.1.0) sha256=181301c9c45b731b4769bc81e8860e72f9161ad7d66dd99103c9ab84f560f5c5
-  minitest (5.27.0) sha256=2d3b17f8a36fe7801c1adcffdbc38233b938eb0b4966e97a6739055a45fa77d5
-  minitest-autotest (1.2.0) sha256=60d031cba705215450662b0060f03f96507682b346a19c27f6756751ad92d2b4
+  minitest (6.0.6) sha256=153ea36d1d987a62942382b61075745042a2b3123b1cd48f4c3675af9cc7d6f1
+  minitest-autotest (1.2.2) sha256=ce9844aae6a47f24ce5decb81a02555098185d71d389396112f59d591164583f
   minitest-focus (1.4.1) sha256=394517cbe2dcb2d992d8ffc41a3b2b6315777a4daa69239de4fefe7110dd810e
   minitest-rg (5.4.0) sha256=54d42bb8ce876381245be5866f3c1dd704ef79c06ba5c9ff280c0aa28c56effb
-  minitest-server (1.0.10) sha256=275439bf3ffc433fcbe161733248f1d9749ebf122892cf010bf864aaa95cef75
   multi_json (1.21.1) sha256=e6126a31808e3b4d19f483c775ceac34df190dffa62adfb63a165ee14ba68080
   mutex_m (0.3.0) sha256=cfcb04ac16b69c4813777022fdceda24e9f798e48092a2b817eb4c0a782b0751
   net-http (0.9.1) sha256=25ba0b67c63e89df626ed8fac771d0ad24ad151a858af2cc8e6a716ca4336996
@@ -398,7 +394,6 @@ CHECKSUMS
   ostruct (0.6.3) sha256=95a2ed4a4bd1d190784e666b47b2d3f078e4a9efda2fccf18f84ddc6538ed912
   parallel (2.1.0) sha256=b35258865c2e31134c5ecb708beaaf6772adf9d5efae28e93e99260877b09356
   parser (3.3.11.1) sha256=d17ace7aabe3e72c3cc94043714be27cc6f852f104d81aa284c2281aecc65d54
-  path_expander (2.0.1) sha256=2de201164bff4719cc4d0b3767286e9977cc832a59c4d70abab571ec86cb41e4
   pp (0.6.3) sha256=2951d514450b93ccfeb1df7d021cae0da16e0a7f95ee1e2273719669d0ab9df6
   prettyprint (0.2.0) sha256=2bc9e15581a94742064a3cc8b0fb9d45aae3d03a1baa6ef80922627a0766f193
   prism (1.9.0) sha256=7b530c6a9f92c24300014919c9dcbc055bf4cdf51ec30aed099b06cd6674ef85