diff --git a/db/migrate/20250425111120_add_author_email_to_ssh_signatures.rb b/db/migrate/20250425111120_add_author_email_to_ssh_signatures.rb
new file mode 100644
index 0000000000000000000000000000000000000000..b96fa9ece915ba397f6c545da7d638b3ab2b515c
--- /dev/null
+++ b/db/migrate/20250425111120_add_author_email_to_ssh_signatures.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class AddAuthorEmailToSshSignatures < Gitlab::Database::Migration[2.2]
+  disable_ddl_transaction!
+  milestone '18.0'
+
+  # rubocop:disable Migration/AddLimitToTextColumns -- limit is added in a separate migration 20250425111203
+  def up
+    add_column :ssh_signatures, :author_email, :text
+  end
+  # rubocop:enable Migration/AddLimitToTextColumns
+
+  def down
+    remove_column :ssh_signatures, :author_email if column_exists?(:ssh_signatures, :author_email)
+  end
+end
diff --git a/db/migrate/20250425111203_add_author_email_limit_to_ssh_signatures.rb b/db/migrate/20250425111203_add_author_email_limit_to_ssh_signatures.rb
new file mode 100644
index 0000000000000000000000000000000000000000..fcafd807267d84c1ab30dc2619a102a24314e92f
--- /dev/null
+++ b/db/migrate/20250425111203_add_author_email_limit_to_ssh_signatures.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class AddAuthorEmailLimitToSshSignatures < Gitlab::Database::Migration[2.2]
+  disable_ddl_transaction!
+  milestone '18.0'
+
+  def up
+    add_text_limit :ssh_signatures, :author_email, 255
+  end
+
+  def down
+    remove_text_limit :ssh_signatures, :author_email
+  end
+end
diff --git a/db/schema_migrations/20250425111120 b/db/schema_migrations/20250425111120
new file mode 100644
index 0000000000000000000000000000000000000000..bd21a506b02d2f6413d4ce750a841559e8aabca3
--- /dev/null
+++ b/db/schema_migrations/20250425111120
@@ -0,0 +1 @@
+a07dd290fe3abc6c4e74f41ec0a83218b4ef8cc8c83a99e0da820fce11c7c732
\ No newline at end of file
diff --git a/db/schema_migrations/20250425111203 b/db/schema_migrations/20250425111203
new file mode 100644
index 0000000000000000000000000000000000000000..537eff660931ce59ea952ae30e068e77b77c09e8
--- /dev/null
+++ b/db/schema_migrations/20250425111203
@@ -0,0 +1 @@
+3672a1886f77ed6e9072ef2e4bb2f1b00f87e1b9f7c7289bc930db1f0f4e376d
\ No newline at end of file
diff --git a/db/structure.sql b/db/structure.sql
index e3ed52b5568cd3bdf69bd44beddf34b837c92a11..9f5d29b208c429819656bdbcf862078bb84c3f18 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -23305,7 +23305,9 @@ CREATE TABLE ssh_signatures (
     verification_status smallint DEFAULT 0 NOT NULL,
     commit_sha bytea NOT NULL,
     user_id bigint,
-    key_fingerprint_sha256 bytea
+    key_fingerprint_sha256 bytea,
+    author_email text,
+    CONSTRAINT check_5ff707c7f9 CHECK ((char_length(author_email) <= 255))
 );
 
 CREATE SEQUENCE ssh_signatures_id_seq