From 5cb8c3ec412afa5b9ca2e51d1eb3acc8fc66c556 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Tue, 17 Feb 2026 12:58:55 -0700
Subject: [PATCH 01/10] Add rapid to the matrix of database versions to test

---
 .evergreen/config.yml              | 26 +++++++++++++++-----------
 .evergreen/config/axes.yml.erb     |  4 ++++
 .evergreen/config/standard.yml.erb | 19 +++++++++++--------
 .mod/drivers-evergreen-tools       |  2 +-
 4 files changed, 31 insertions(+), 20 deletions(-)

diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index 6ec839c605..9097e3702f 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -777,6 +777,10 @@ axes:
   - id: "mongodb-version"
     display_name: MongoDB Version
     values:
+      - id: "rapid"
+        display_name: "Rapid"
+        variables:
+          MONGODB_VERSION: "rapid"
       - id: "8.0"
         display_name: "8.0"
         variables:
@@ -1245,7 +1249,7 @@ buildvariants:
   - matrix_name: "single-lb"
     matrix_spec:
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: load-balanced
       single-mongos: single-mongos
       os: ubuntu2204
@@ -1269,7 +1273,7 @@ buildvariants:
   - matrix_name: "single-mongos"
     matrix_spec:
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: "sharded-cluster"
       single-mongos: single-mongos
       os: ubuntu2204
@@ -1281,7 +1285,7 @@ buildvariants:
   - matrix_name: CSOT
     matrix_spec:
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: replica-set-single-node
       os: ubuntu2204
     display_name: "CSOT - ${mongodb-version}"
@@ -1304,7 +1308,7 @@ buildvariants:
     matrix_spec:
       retry-reads: no-retry-reads
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: ["standalone", "replica-set", "sharded-cluster"]
       os: ubuntu2204
     display_name: "${mongodb-version} ${topology} ${retry-reads} ${ruby}"
@@ -1316,7 +1320,7 @@ buildvariants:
     matrix_spec:
       retry-writes: no-retry-writes
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: [replica-set, sharded-cluster]
       os: ubuntu2204
     display_name: "${mongodb-version} ${topology} ${retry-writes} ${ruby}"
@@ -1406,7 +1410,7 @@ buildvariants:
     matrix_spec:
       auth-and-ssl: [ "auth-and-ssl", "noauth-and-nossl" ]
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: "replica-set"
       compressor: 'zlib'
       os: ubuntu2204
@@ -1419,7 +1423,7 @@ buildvariants:
     matrix_spec:
       auth-and-ssl: [ "auth-and-ssl", "noauth-and-nossl" ]
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: "replica-set"
       compressor: 'snappy'
       os: ubuntu2204
@@ -1436,7 +1440,7 @@ buildvariants:
     matrix_spec:
       auth-and-ssl: [ "auth-and-ssl", "noauth-and-nossl" ]
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: "replica-set"
       compressor: 'zstd'
       os: ubuntu2204
@@ -1448,7 +1452,7 @@ buildvariants:
   - matrix_name: activesupport-"ruby-4.0"
     matrix_spec:
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: replica-set
       as: as
       os: ubuntu2204
@@ -1460,7 +1464,7 @@ buildvariants:
   - matrix_name: bson-"ruby-4.0"
     matrix_spec:
       ruby: "ruby-4.0"
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       topology: replica-set
       bson: "*"
       os: ubuntu2204
@@ -1592,7 +1596,7 @@ buildvariants:
       auth-and-ssl: [ aws-regular, aws-assume-role, aws-web-identity ]
       ruby: "ruby-4.0"
       topology: standalone
-      mongodb-version: "8.0"
+      mongodb-version: ["8.0", "rapid"]
       os: ubuntu2204
     display_name: "AWS ${auth-and-ssl} ${mongodb-version} ${ruby}"
     tags: ["pr"]
diff --git a/.evergreen/config/axes.yml.erb b/.evergreen/config/axes.yml.erb
index 66f1ec5f9b..5219f22e87 100644
--- a/.evergreen/config/axes.yml.erb
+++ b/.evergreen/config/axes.yml.erb
@@ -2,6 +2,10 @@ axes:
   - id: "mongodb-version"
     display_name: MongoDB Version
     values:
+      - id: "rapid"
+        display_name: "Rapid"
+        variables:
+          MONGODB_VERSION: "rapid"
       - id: "8.0"
         display_name: "8.0"
         variables:
diff --git a/.evergreen/config/standard.yml.erb b/.evergreen/config/standard.yml.erb
index 83c0d404e1..10041345c3 100644
--- a/.evergreen/config/standard.yml.erb
+++ b/.evergreen/config/standard.yml.erb
@@ -27,7 +27,10 @@
                      jrubies
 
   # The latest stable version of MongoDB
-  latest_stable_mdb = "8.0".inspect # so it gets quoted as a string
+  latest_stable_mdb_raw = "8.0"
+  latest_stable_mdb = latest_stable_mdb_raw.inspect # so it gets quoted as a string
+
+  stable_and_rapid = [ latest_stable_mdb_raw, "rapid" ]
 
   recent_mdb = %w( 8.0 7.0 )
 %>
@@ -112,7 +115,7 @@ buildvariants:
   - matrix_name: "single-lb"
     matrix_spec:
       ruby: <%= latest_ruby %>
-      mongodb-version: <%= latest_stable_mdb %>
+      mongodb-version: <%= stable_and_rapid %>
       topology: load-balanced
       single-mongos: single-mongos
       os: ubuntu2204
@@ -136,7 +139,7 @@ buildvariants:
   - matrix_name: "single-mongos"
     matrix_spec:
       ruby: <%= latest_ruby %>
-      mongodb-version: <%= latest_stable_mdb %>
+      mongodb-version: <%= stable_and_rapid %>
       topology: "sharded-cluster"
       single-mongos: single-mongos
       os: ubuntu2204
@@ -148,7 +151,7 @@ buildvariants:
   - matrix_name: CSOT
     matrix_spec:
       ruby: <%= latest_ruby %>
-      mongodb-version: <%= latest_stable_mdb %>
+      mongodb-version: <%= stable_and_rapid %>
       topology: replica-set-single-node
       os: ubuntu2204
     display_name: "CSOT - ${mongodb-version}"
@@ -171,7 +174,7 @@ buildvariants:
     matrix_spec:
       retry-reads: no-retry-reads
       ruby: <%= latest_ruby %>
-      mongodb-version: <%= latest_stable_mdb %>
+      mongodb-version: <%= stable_and_rapid %>
       topology: <%= topologies %>
       os: ubuntu2204
     display_name: "${mongodb-version} ${topology} ${retry-reads} ${ruby}"
@@ -183,7 +186,7 @@ buildvariants:
     matrix_spec:
       retry-writes: no-retry-writes
       ruby: <%= latest_ruby %>
-      mongodb-version: <%= latest_stable_mdb %>
+      mongodb-version: <%= stable_and_rapid %>
       topology: [replica-set, sharded-cluster]
       os: ubuntu2204
     display_name: "${mongodb-version} ${topology} ${retry-writes} ${ruby}"
@@ -270,7 +273,7 @@ buildvariants:
       - name: "run-main-test-suite"
 
  <% [
-      [latest_ruby, latest_stable_mdb, 'ubuntu2204'],
+      [latest_ruby, stable_and_rapid, 'ubuntu2204'],
       [supported_mri_ruby_2, '"6.0"', 'ubuntu2004']
     ].each do |rubies, mdb, distro|
  %>
@@ -399,7 +402,7 @@ buildvariants:
       auth-and-ssl: [ aws-regular, aws-assume-role, aws-web-identity ]
       ruby: <%= latest_ruby %>
       topology: standalone
-      mongodb-version: <%= latest_stable_mdb %>
+      mongodb-version: <%= stable_and_rapid %>
       os: ubuntu2204
     display_name: "AWS ${auth-and-ssl} ${mongodb-version} ${ruby}"
     tags: ["pr"]
diff --git a/.mod/drivers-evergreen-tools b/.mod/drivers-evergreen-tools
index 9142b7055e..f3720c0b98 160000
--- a/.mod/drivers-evergreen-tools
+++ b/.mod/drivers-evergreen-tools
@@ -1 +1 @@
-Subproject commit 9142b7055ea5940e59ad41c4b069376f867031da
+Subproject commit f3720c0b98fb14a8b452670f7cda5ef8080e7eaf

From d91e130d8e3d21dfe8fe50a7d2ff7b45224348f9 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Tue, 17 Feb 2026 13:23:51 -0700
Subject: [PATCH 02/10] hard code the rapid version

drivers-evergreen-tools is (for some reason) pulling 8.3.0-alpha when I
ask for rapid...
---
 .evergreen/config.yml          | 2 +-
 .evergreen/config/axes.yml.erb | 2 +-
 .mod/drivers-evergreen-tools   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index 9097e3702f..a6dbfd6bf3 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -780,7 +780,7 @@ axes:
       - id: "rapid"
         display_name: "Rapid"
         variables:
-          MONGODB_VERSION: "rapid"
+          MONGODB_VERSION: "8.2"
       - id: "8.0"
         display_name: "8.0"
         variables:
diff --git a/.evergreen/config/axes.yml.erb b/.evergreen/config/axes.yml.erb
index 5219f22e87..c12c36677e 100644
--- a/.evergreen/config/axes.yml.erb
+++ b/.evergreen/config/axes.yml.erb
@@ -5,7 +5,7 @@ axes:
       - id: "rapid"
         display_name: "Rapid"
         variables:
-          MONGODB_VERSION: "rapid"
+          MONGODB_VERSION: "8.2"
       - id: "8.0"
         display_name: "8.0"
         variables:
diff --git a/.mod/drivers-evergreen-tools b/.mod/drivers-evergreen-tools
index f3720c0b98..9142b7055e 160000
--- a/.mod/drivers-evergreen-tools
+++ b/.mod/drivers-evergreen-tools
@@ -1 +1 @@
-Subproject commit f3720c0b98fb14a8b452670f7cda5ef8080e7eaf
+Subproject commit 9142b7055ea5940e59ad41c4b069376f867031da

From 12f60930f7fb3fb3e3ab86f121921566a9789015 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Tue, 17 Feb 2026 13:44:58 -0700
Subject: [PATCH 03/10] we need the newer drivers-evergreen-tools, after all

---
 .mod/drivers-evergreen-tools | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.mod/drivers-evergreen-tools b/.mod/drivers-evergreen-tools
index 9142b7055e..f3720c0b98 160000
--- a/.mod/drivers-evergreen-tools
+++ b/.mod/drivers-evergreen-tools
@@ -1 +1 @@
-Subproject commit 9142b7055ea5940e59ad41c4b069376f867031da
+Subproject commit f3720c0b98fb14a8b452670f7cda5ef8080e7eaf

From f15de3b99b873bece8e9a3322c1f43c9cccb9eae Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Tue, 17 Feb 2026 15:09:47 -0700
Subject: [PATCH 04/10] make sure waitress is installed (for ocsp mocking)

---
 .evergreen/run-tests.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.evergreen/run-tests.sh b/.evergreen/run-tests.sh
index 27e02c3302..da94291800 100755
--- a/.evergreen/run-tests.sh
+++ b/.evergreen/run-tests.sh
@@ -61,6 +61,7 @@ prepare_server
 
 if test "$DOCKER_PRELOAD" != 1; then
   install_mlaunch_venv
+  pip3 install waitress
 fi
 
 # Make sure cmake is installed (in case we need to install the libmongocrypt

From eb6611f54859673f466f4833370abe9c803fe485 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Thu, 19 Feb 2026 10:23:27 -0700
Subject: [PATCH 05/10] disable mongocryptd specs per SERVER-118428

---
 .evergreen/config.yml              |  6 ++++--
 .evergreen/config/standard.yml.erb |  6 ++++--
 spec/support/crypt.rb              | 15 +++++++++++++++
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index a6dbfd6bf3..dc49f558c4 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -1539,12 +1539,12 @@ buildvariants:
     tasks:
       - name: "test-mlaunch"
 
-  - matrix_name: "fle above 4.4"
+  - matrix_name: "fle"
     matrix_spec:
       auth-and-ssl: "noauth-and-nossl"
       ruby: ["ruby-4.0", "ruby-3.4", "ruby-3.3", "ruby-3.2", "ruby-3.1"]
       topology: [replica-set, sharded-cluster]
-      mongodb-version: [ '6.0', '7.0', '8.0' ]
+      mongodb-version: [ '6.0', '7.0', '8.0', 'rapid' ]
       os: ubuntu2204
       fle: helper
     display_name: "FLE: ${mongodb-version} ${topology} ${ruby}"
@@ -1575,6 +1575,8 @@ buildvariants:
 #    tasks:
 #      - name: "test-fle"
 
+  # Runs specs against the latest server. This is not automatically run on PR's
+  # because we don't want to block PR's when the latest DB breaks something.
   - name: 'latest-server'
     activate: false
     display_name: 'Latest MongoDB Server'
diff --git a/.evergreen/config/standard.yml.erb b/.evergreen/config/standard.yml.erb
index 10041345c3..db844c82bd 100644
--- a/.evergreen/config/standard.yml.erb
+++ b/.evergreen/config/standard.yml.erb
@@ -345,12 +345,12 @@ buildvariants:
       - name: "test-mlaunch"
   <% end %>
 
-  - matrix_name: "fle above 4.4"
+  - matrix_name: "fle"
     matrix_spec:
       auth-and-ssl: "noauth-and-nossl"
       ruby: <%= supported_mri_rubies_3_ubuntu %>
       topology: [replica-set, sharded-cluster]
-      mongodb-version: [ '6.0', '7.0', '8.0' ]
+      mongodb-version: [ '6.0', '7.0', '8.0', 'rapid' ]
       os: ubuntu2204
       fle: helper
     display_name: "FLE: ${mongodb-version} ${topology} ${ruby}"
@@ -381,6 +381,8 @@ buildvariants:
 #    tasks:
 #      - name: "test-fle"
 
+  # Runs specs against the latest server. This is not automatically run on PR's
+  # because we don't want to block PR's when the latest DB breaks something.
   - name: 'latest-server'
     activate: false
     display_name: 'Latest MongoDB Server'
diff --git a/spec/support/crypt.rb b/spec/support/crypt.rb
index f6337eeb63..14b65720a1 100644
--- a/spec/support/crypt.rb
+++ b/spec/support/crypt.rb
@@ -23,6 +23,21 @@ module Crypt
 
   # For all FLE-related tests
   shared_context 'define shared FLE helpers' do
+    # SERVER-118428 -- mongocryptd rejects large messages
+    # DRIVERS-3382 -- once SERVER-118428 is fixed, remove these checks
+    before do
+      if extra_options[:mongocryptd_uri]
+        version = ClusterConfig.instance.server_version
+        bad_mongocryptd = case version
+          when /^8\.2/ then version >= '8.2.4'
+          when /^8\.0/ then version >= '8.0.18'
+          when /^7\.0/ then version >= '7.0.29'
+          else false
+          end
+        skip 'Bad mongocryptd version -- see DRIVERS-3382' if bad_mongocryptd
+      end
+    end
+
     # 96-byte binary string, base64-encoded local master key
     let(:local_master_key_b64) do
       Crypt::LOCAL_MASTER_KEY_B64

From b7cdfa56c35f1761b106214142624c1cdd0e7242 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Thu, 19 Feb 2026 14:56:23 -0700
Subject: [PATCH 06/10] some 6.0 specs are broken by changes to mock kms server

---
 .../client_side_encryption/kms_tls_options_spec.rb        | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/spec/integration/client_side_encryption/kms_tls_options_spec.rb b/spec/integration/client_side_encryption/kms_tls_options_spec.rb
index a36b1d745b..6b3ce3d0aa 100644
--- a/spec/integration/client_side_encryption/kms_tls_options_spec.rb
+++ b/spec/integration/client_side_encryption/kms_tls_options_spec.rb
@@ -389,7 +389,9 @@
       end
 
       let(:should_raise_with_tls) do
-        true
+        # 6.0 mongocrypt expects a JSON-compatible error message from the KMS, but
+        # the mock KMS server returns an HTML error page.
+        ClusterConfig.instance.server_version >= '7.0'
       end
 
       it_behaves_like 'it respect KMS TLS options'
@@ -410,7 +412,9 @@
       end
 
       let(:should_raise_with_tls) do
-        true
+        # 6.0 mongocrypt expects a JSON-compatible error message from the KMS, but
+        # the mock KMS server returns an HTML error page.
+        ClusterConfig.instance.server_version >= '7.0'
       end
 
       it_behaves_like 'it respect KMS TLS options'

From de398e6b3e280100a98a4377c5367e280f8a136f Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Thu, 19 Feb 2026 15:29:45 -0700
Subject: [PATCH 07/10] have to approach this with a narrower filter

---
 .../kms_tls_options_spec.rb                     | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/spec/integration/client_side_encryption/kms_tls_options_spec.rb b/spec/integration/client_side_encryption/kms_tls_options_spec.rb
index 6b3ce3d0aa..8abb6e8ee5 100644
--- a/spec/integration/client_side_encryption/kms_tls_options_spec.rb
+++ b/spec/integration/client_side_encryption/kms_tls_options_spec.rb
@@ -18,6 +18,13 @@
       )
     end
 
+    # 6.0 mongocrypt expects a JSON-compatible error message from the KMS, but
+    # the mock KMS server returns an HTML error page.
+    let(:affected_by_mock_kms_server_change) do
+      (kms_provider == 'azure' || kms_provider == 'gcp') &&
+        ClusterConfig.instance.server_version >= '7.0'
+    end
+
     let(:client_encryption_no_client_cert) do
       Mongo::ClientEncryption.new(
         client,
@@ -314,7 +321,7 @@
         end
 
         it 'raises KmsError directly without wrapping CryptError' do
-          if should_raise_with_tls
+          if should_raise_with_tls && !affected_by_mock_kms_server_change
             begin
               client_encryption_with_tls.create_data_key(
                 kms_provider,
@@ -389,9 +396,7 @@
       end
 
       let(:should_raise_with_tls) do
-        # 6.0 mongocrypt expects a JSON-compatible error message from the KMS, but
-        # the mock KMS server returns an HTML error page.
-        ClusterConfig.instance.server_version >= '7.0'
+        true
       end
 
       it_behaves_like 'it respect KMS TLS options'
@@ -412,9 +417,7 @@
       end
 
       let(:should_raise_with_tls) do
-        # 6.0 mongocrypt expects a JSON-compatible error message from the KMS, but
-        # the mock KMS server returns an HTML error page.
-        ClusterConfig.instance.server_version >= '7.0'
+        true
       end
 
       it_behaves_like 'it respect KMS TLS options'

From acf07e0128a3462965fef6733713261227374fc5 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Thu, 19 Feb 2026 16:04:16 -0700
Subject: [PATCH 08/10] ugh, got the logic flipped

---
 spec/integration/client_side_encryption/kms_tls_options_spec.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec/integration/client_side_encryption/kms_tls_options_spec.rb b/spec/integration/client_side_encryption/kms_tls_options_spec.rb
index 8abb6e8ee5..ff1c1f4878 100644
--- a/spec/integration/client_side_encryption/kms_tls_options_spec.rb
+++ b/spec/integration/client_side_encryption/kms_tls_options_spec.rb
@@ -22,7 +22,7 @@
     # the mock KMS server returns an HTML error page.
     let(:affected_by_mock_kms_server_change) do
       (kms_provider == 'azure' || kms_provider == 'gcp') &&
-        ClusterConfig.instance.server_version >= '7.0'
+        ClusterConfig.instance.server_version < '7.0'
     end
 
     let(:client_encryption_no_client_cert) do

From 2f3b154c522582fe9fa2fff2c1aa0edfb04b0f2b Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Fri, 20 Feb 2026 10:01:29 -0700
Subject: [PATCH 09/10] rapid really does mean the latest minor release (even
 pre-releases)

---
 .evergreen/config.yml          | 2 +-
 .evergreen/config/axes.yml.erb | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index dc49f558c4..d4e48a29c0 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -780,7 +780,7 @@ axes:
       - id: "rapid"
         display_name: "Rapid"
         variables:
-          MONGODB_VERSION: "8.2"
+          MONGODB_VERSION: "rapid"
       - id: "8.0"
         display_name: "8.0"
         variables:
diff --git a/.evergreen/config/axes.yml.erb b/.evergreen/config/axes.yml.erb
index c12c36677e..5219f22e87 100644
--- a/.evergreen/config/axes.yml.erb
+++ b/.evergreen/config/axes.yml.erb
@@ -5,7 +5,7 @@ axes:
       - id: "rapid"
         display_name: "Rapid"
         variables:
-          MONGODB_VERSION: "8.2"
+          MONGODB_VERSION: "rapid"
       - id: "8.0"
         display_name: "8.0"
         variables:

From fb56a03e489595510262cfa7de219bf11c0337df Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis.buck@mongodb.com>
Date: Mon, 23 Feb 2026 08:14:08 -0700
Subject: [PATCH 10/10] skip failing spec (caused by RUBY-3781)

---
 spec/spec_tests/data/sdam_unified/hello-network-error.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/spec/spec_tests/data/sdam_unified/hello-network-error.yml b/spec/spec_tests/data/sdam_unified/hello-network-error.yml
index cdb10909ff..3b5df7c4e8 100644
--- a/spec/spec_tests/data/sdam_unified/hello-network-error.yml
+++ b/spec/spec_tests/data/sdam_unified/hello-network-error.yml
@@ -104,6 +104,7 @@ tests:
           - _id: 2
 
   - description: Network error on Monitor check
+    skipReason: "RUBY-3781: Ruby driver's legacy_write_with_retry causes this to fail"
     operations:
       - name: createEntities
         object: testRunner