diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 3e2bf49..980ea05 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.1"
+  ".": "0.4.2"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 3e20d4f..ac83981 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 15
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/hexlet%2Fcloudpayments-737bf804f9ef1282c03bc532fc392f69a6e00eb5d229fa39368ea8ca2ff02de1.yml
 openapi_spec_hash: 68aafd72cb1fa7266ab697cc29f73583
-config_hash: 33c8a1290e177bcab7a82d1fe4e9ecfd
+config_hash: 7e3e36dabba4af552324a8ffefba23f5
diff --git a/CHANGELOG.md b/CHANGELOG.md
index be1a340..6d19bf5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## 0.4.2 (2026-02-27)
+
+Full Changelog: [v0.4.1...v0.4.2](https://github.com/Hexlet/cloudpayments-ruby/compare/v0.4.1...v0.4.2)
+
+### Bug Fixes
+
+* properly mock time in ruby ci tests ([7cfd820](https://github.com/Hexlet/cloudpayments-ruby/commit/7cfd8204e2a9d7045d9a05045be6b525768455e0))
+
+
+### Chores
+
+* **internal:** remove mock server code ([e100d4f](https://github.com/Hexlet/cloudpayments-ruby/commit/e100d4f1eb3433101355817d309ae3008b0faa06))
+* update mock server docs ([36a2a37](https://github.com/Hexlet/cloudpayments-ruby/commit/36a2a3788aa8b4638c9d41e2fe54a6cd4a939990))
+
 ## 0.4.1 (2026-02-13)
 
 Full Changelog: [v0.4.0...v0.4.1](https://github.com/Hexlet/cloudpayments-ruby/compare/v0.4.0...v0.4.1)
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d38fc92..8d2514f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -66,12 +66,6 @@ $ bundle exec rake
 
 ## Running tests
 
-Most tests require you to [set up a mock server](https://github.com/stoplightio/prism) against the OpenAPI spec to run the tests.
-
-```bash
-$ npx prism mock path/to/your/openapi.yml
-```
-
 ```bash
 $ bundle exec rake test
 ```
diff --git a/Gemfile.lock b/Gemfile.lock
index a8d38fb..660c30e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    cloudpayments-ruby (0.4.1)
+    cloudpayments-ruby (0.4.2)
       cgi
       connection_pool
 
diff --git a/README.md b/README.md
index 91fdbde..4dd30b8 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "cloudpayments-ruby", "~> 0.4.1"
+gem "cloudpayments-ruby", "~> 0.4.2"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/cloudpayments_ruby/version.rb b/lib/cloudpayments_ruby/version.rb
index e6fd350..9b7fe58 100644
--- a/lib/cloudpayments_ruby/version.rb
+++ b/lib/cloudpayments_ruby/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module CloudpaymentsRuby
-  VERSION = "0.4.1"
+  VERSION = "0.4.2"
 end
diff --git a/scripts/mock b/scripts/mock
deleted file mode 100755
index 0b28f6e..0000000
--- a/scripts/mock
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-cd "$(dirname "$0")/.."
-
-if [[ -n "$1" && "$1" != '--'* ]]; then
-  URL="$1"
-  shift
-else
-  URL="$(grep 'openapi_spec_url' .stats.yml | cut -d' ' -f2)"
-fi
-
-# Check if the URL is empty
-if [ -z "$URL" ]; then
-  echo "Error: No OpenAPI spec path/url provided or found in .stats.yml"
-  exit 1
-fi
-
-echo "==> Starting mock server with URL ${URL}"
-
-# Run prism mock on the given spec
-if [ "$1" == "--daemon" ]; then
-  npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism mock "$URL" &> .prism.log &
-
-  # Wait for server to come online
-  echo -n "Waiting for server"
-  while ! grep -q "✖  fatal\|Prism is listening" ".prism.log" ; do
-    echo -n "."
-    sleep 0.1
-  done
-
-  if grep -q "✖  fatal" ".prism.log"; then
-    cat .prism.log
-    exit 1
-  fi
-
-  echo
-else
-  npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism mock "$URL"
-fi
diff --git a/scripts/test b/scripts/test
index e0dc137..df8caf9 100755
--- a/scripts/test
+++ b/scripts/test
@@ -4,53 +4,7 @@ set -e
 
 cd -- "$(dirname -- "$0")/.."
 
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-YELLOW='\033[0;33m'
-NC='\033[0m' # No Color
 
-function prism_is_running() {
-  curl --silent "http://localhost:4010" >/dev/null 2>&1
-}
-
-kill_server_on_port() {
-  pids=$(lsof -t -i tcp:"$1" || echo "")
-  if [ "$pids" != "" ]; then
-    kill "$pids"
-    echo "Stopped $pids."
-  fi
-}
-
-function is_overriding_api_base_url() {
-  [ -n "$TEST_API_BASE_URL" ]
-}
-
-if ! is_overriding_api_base_url && ! prism_is_running ; then
-  # When we exit this script, make sure to kill the background mock server process
-  trap 'kill_server_on_port 4010' EXIT
-
-  # Start the dev server
-  ./scripts/mock --daemon
-fi
-
-if is_overriding_api_base_url ; then
-  echo -e "${GREEN}✔ Running tests against ${TEST_API_BASE_URL}${NC}"
-  echo
-elif ! prism_is_running ; then
-  echo -e "${RED}ERROR:${NC} The test suite will not run without a mock Prism server"
-  echo -e "running against your OpenAPI spec."
-  echo
-  echo -e "To run the server, pass in the path or url of your OpenAPI"
-  echo -e "spec to the prism command:"
-  echo
-  echo -e "  \$ ${YELLOW}npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism mock path/to/your.openapi.yml${NC}"
-  echo
-
-  exit 1
-else
-  echo -e "${GREEN}✔ Mock prism server is running with your OpenAPI spec${NC}"
-  echo
-fi
 
 echo "==> Running tests"
 bundle exec rake test "$@"
diff --git a/test/cloudpayments_ruby/client_test.rb b/test/cloudpayments_ruby/client_test.rb
index edaaec9..2048def 100644
--- a/test/cloudpayments_ruby/client_test.rb
+++ b/test/cloudpayments_ruby/client_test.rb
@@ -150,9 +150,11 @@ def test_client_retry_after_seconds
   end
 
   def test_client_retry_after_date
+    time_now = Time.now
+
     stub_request(:post, "http://localhost/payments/cards/charge").to_return_json(
       status: 500,
-      headers: {"retry-after" => (Time.now + 10).httpdate},
+      headers: {"retry-after" => (time_now + 10).httpdate},
       body: {}
     )
 
@@ -164,15 +166,15 @@ def test_client_retry_after_date
         max_retries: 1
       )
 
+    Thread.current.thread_variable_set(:time_now, time_now)
     assert_raises(CloudpaymentsRuby::Errors::InternalServerError) do
-      Thread.current.thread_variable_set(:time_now, Time.now)
       cloudpayments.payments.charge(
         amount: 0,
         card_cryptogram_packet: "CardCryptogramPacket",
         ip_address: "IpAddress"
       )
-      Thread.current.thread_variable_set(:time_now, nil)
     end
+    Thread.current.thread_variable_set(:time_now, nil)
 
     assert_requested(:any, /./, times: 2)
     assert_in_delta(10, Thread.current.thread_variable_get(:mock_sleep).last, 1.0)
diff --git a/test/cloudpayments_ruby/resources/orders_test.rb b/test/cloudpayments_ruby/resources/orders_test.rb
index 392cfaf..c001bd8 100644
--- a/test/cloudpayments_ruby/resources/orders_test.rb
+++ b/test/cloudpayments_ruby/resources/orders_test.rb
@@ -4,7 +4,7 @@
 
 class CloudpaymentsRuby::Test::Resources::OrdersTest < CloudpaymentsRuby::Test::ResourceTest
   def test_create_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.orders.create(amount: 0, description: "Description")
 
@@ -22,7 +22,7 @@ def test_create_required_params
   end
 
   def test_cancel_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.orders.cancel(id: "Id")
 
diff --git a/test/cloudpayments_ruby/resources/payments/tokens_test.rb b/test/cloudpayments_ruby/resources/payments/tokens_test.rb
index bd866eb..ad1d045 100644
--- a/test/cloudpayments_ruby/resources/payments/tokens_test.rb
+++ b/test/cloudpayments_ruby/resources/payments/tokens_test.rb
@@ -4,7 +4,7 @@
 
 class CloudpaymentsRuby::Test::Resources::Payments::TokensTest < CloudpaymentsRuby::Test::ResourceTest
   def test_auth_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response =
       @cloudpayments.payments.tokens.auth(
@@ -28,7 +28,7 @@ def test_auth_required_params
   end
 
   def test_charge_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response =
       @cloudpayments.payments.tokens.charge(
diff --git a/test/cloudpayments_ruby/resources/payments_test.rb b/test/cloudpayments_ruby/resources/payments_test.rb
index b1322d7..4d0bc94 100644
--- a/test/cloudpayments_ruby/resources/payments_test.rb
+++ b/test/cloudpayments_ruby/resources/payments_test.rb
@@ -4,7 +4,7 @@
 
 class CloudpaymentsRuby::Test::Resources::PaymentsTest < CloudpaymentsRuby::Test::ResourceTest
   def test_auth_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response =
       @cloudpayments.payments.auth(
@@ -26,7 +26,7 @@ def test_auth_required_params
   end
 
   def test_charge_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response =
       @cloudpayments.payments.charge(
@@ -48,7 +48,7 @@ def test_charge_required_params
   end
 
   def test_confirm_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.payments.confirm(amount: 0, transaction_id: 0)
 
@@ -65,7 +65,7 @@ def test_confirm_required_params
   end
 
   def test_post3ds_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.payments.post3ds(pa_res: "PaRes", transaction_id: 0)
 
@@ -83,7 +83,7 @@ def test_post3ds_required_params
   end
 
   def test_refund_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.payments.refund(amount: 0, transaction_id: 0)
 
@@ -101,7 +101,7 @@ def test_refund_required_params
   end
 
   def test_void_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.payments.void(transaction_id: 0)
 
diff --git a/test/cloudpayments_ruby/resources/subscriptions_test.rb b/test/cloudpayments_ruby/resources/subscriptions_test.rb
index 3f49361..81df5bb 100644
--- a/test/cloudpayments_ruby/resources/subscriptions_test.rb
+++ b/test/cloudpayments_ruby/resources/subscriptions_test.rb
@@ -4,7 +4,7 @@
 
 class CloudpaymentsRuby::Test::Resources::SubscriptionsTest < CloudpaymentsRuby::Test::ResourceTest
   def test_create_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response =
       @cloudpayments.subscriptions.create(
@@ -33,7 +33,7 @@ def test_create_required_params
   end
 
   def test_update_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.subscriptions.update(id: "Id")
 
@@ -51,7 +51,7 @@ def test_update_required_params
   end
 
   def test_cancel_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.subscriptions.cancel(id: "Id")
 
@@ -68,7 +68,7 @@ def test_cancel_required_params
   end
 
   def test_find_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.subscriptions.find(account_id: "AccountId")
 
@@ -86,7 +86,7 @@ def test_find_required_params
   end
 
   def test_get_required_params
-    skip("Prism tests are disabled")
+    skip("Mock server tests are disabled")
 
     response = @cloudpayments.subscriptions.get(id: "Id")