diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ba52c5..92548c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@
   for explicit device linking.
 * Added the processors `:banquest`, `:fat_zebra`, `:summit_payments`, and
   `:yaadpay` to `Minfraud::Components::Payment`.
+* Added `:clear` to the valid values for the `tag` attribute on
+  `Minfraud::Components::Report::Transaction`.
 * Unnecessary files were removed from the published .gem.
 
 ## v2.9.0 (2025-11-20)
diff --git a/lib/minfraud/components/report/transaction.rb b/lib/minfraud/components/report/transaction.rb
index a78ef91..16fc187 100644
--- a/lib/minfraud/components/report/transaction.rb
+++ b/lib/minfraud/components/report/transaction.rb
@@ -23,13 +23,13 @@ class Transaction < Base
         # A symbol indicating the likelihood that a transaction may be
         # fraudulent.
         #
-        # This may be one of +:chargeback+, +:not_fraud+, +:spam_or_abuse+, or
-        # +:suspected_fraud+.
+        # This may be one of +:chargeback+, +:clear+ (to retract a previous
+        # report), +:not_fraud+, +:spam_or_abuse+, or +:suspected_fraud+.
         #
         # @!attribute tag
         #
         # @return [Symbol, nil]
-        enum_accessor :tag, %i[chargeback not_fraud spam_or_abuse suspected_fraud]
+        enum_accessor :tag, %i[chargeback clear not_fraud spam_or_abuse suspected_fraud]
 
         # A string which is provided by your payment processor indicating the
         # reason for the chargeback.
diff --git a/mise.lock b/mise.lock
new file mode 100644
index 0000000..a5872a9
--- /dev/null
+++ b/mise.lock
@@ -0,0 +1,32 @@
+# @generated - this file is auto-generated by `mise lock` https://mise.jdx.dev/dev-tools/mise-lock.html
+
+[[tools.ruby]]
+version = "4.0.3"
+backend = "core:ruby"
+
+[tools.ruby."platforms.linux-arm64"]
+checksum = "sha256:77964acc370d5c8375b9502e5ba6c13c03ef91ab9eb9f521c84fb42b9c9a6b0f"
+url = "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.3.tar.gz"
+
+[tools.ruby."platforms.linux-arm64-musl"]
+checksum = "sha256:77964acc370d5c8375b9502e5ba6c13c03ef91ab9eb9f521c84fb42b9c9a6b0f"
+url = "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.3.tar.gz"
+
+[tools.ruby."platforms.linux-x64"]
+checksum = "sha256:77964acc370d5c8375b9502e5ba6c13c03ef91ab9eb9f521c84fb42b9c9a6b0f"
+url = "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.3.tar.gz"
+
+[tools.ruby."platforms.linux-x64-musl"]
+checksum = "sha256:77964acc370d5c8375b9502e5ba6c13c03ef91ab9eb9f521c84fb42b9c9a6b0f"
+url = "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.3.tar.gz"
+
+[tools.ruby."platforms.macos-arm64"]
+checksum = "sha256:77964acc370d5c8375b9502e5ba6c13c03ef91ab9eb9f521c84fb42b9c9a6b0f"
+url = "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.3.tar.gz"
+
+[tools.ruby."platforms.macos-x64"]
+checksum = "sha256:77964acc370d5c8375b9502e5ba6c13c03ef91ab9eb9f521c84fb42b9c9a6b0f"
+url = "https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.3.tar.gz"
+
+[tools.ruby."platforms.windows-x64"]
+url = "https://github.com/oneclick/rubyinstaller2/releases/download/RubyInstaller-4.0.3-1/rubyinstaller-4.0.3-1-x64.7z"
diff --git a/mise.toml b/mise.toml
new file mode 100644
index 0000000..bea4666
--- /dev/null
+++ b/mise.toml
@@ -0,0 +1,17 @@
+[settings]
+experimental = true
+lockfile = true
+disable_backends = [
+    "asdf",
+    "vfox",
+]
+
+[tools]
+ruby = "latest"
+
+[hooks]
+enter = "mise install --quiet --locked"
+
+[[watch_files]]
+patterns = ["mise.toml", "mise.lock"]
+run = "mise install --quiet --locked"
diff --git a/spec/components/report/transaction_spec.rb b/spec/components/report/transaction_spec.rb
index 5b58966..1d5ef02 100644
--- a/spec/components/report/transaction_spec.rb
+++ b/spec/components/report/transaction_spec.rb
@@ -17,7 +17,7 @@
     end
 
     context 'with all valid tags' do
-      values = %i[chargeback not_fraud spam_or_abuse suspected_fraud]
+      values = %i[chargeback clear not_fraud spam_or_abuse suspected_fraud]
       values.each do |val|
         it "accepts #{val} as a valid tag" do
           result = described_class.new(tag: val)