@@ -2508,6 +2508,13 @@ impl fmt::Display for AlterSnowflakeSecretOperation {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum AlterTagOperation {
+    /// `SET DATA MOVEMENT POLICY <policy> [FORCE]`
+    SetDataMovementPolicy {
+        /// The data movement policy name.
+        policy: ObjectName,
+        /// Replace an existing attachment.
+        force: bool,
+    },
     /// `RENAME TO <new_name>`
     RenameTo {
         /// The new tag name.
@@ -2532,6 +2539,13 @@ pub enum AlterTagOperation {
 impl fmt::Display for AlterTagOperation {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
+            AlterTagOperation::SetDataMovementPolicy { policy, force } => {
+                write!(f, "SET DATA MOVEMENT POLICY {policy}")?;
+                if *force {
+                    write!(f, " FORCE")?;
+                }
+                Ok(())
+            }
             AlterTagOperation::RenameTo { new_name } => write!(f, "RENAME TO {new_name}"),
             AlterTagOperation::SetMaskingPolicy { policies, force } => {
                 write!(f, "SET ")?;
 
@@ -4983,10 +4983,20 @@ fn parse_alter_tag(parser: &mut Parser) -> Result<Statement, ParserError> {
     let if_exists = parser.parse_keywords(&[Keyword::IF, Keyword::EXISTS]);
     let name = parser.parse_object_name(false)?;
     let operation = if parser.parse_keyword(Keyword::SET) {
-        let policies = parse_masking_policy_list(parser)?;
-        let force = parser.parse_keyword(Keyword::FORCE);
-        AlterTagOperation::SetMaskingPolicy { policies, force }
+        if parser.parse_keyword(Keyword::DATA) {
+            parser.expect_keywords(&[Keyword::MOVEMENT, Keyword::POLICY])?;
+            let policy = parser.parse_object_name(false)?;
+            let force = parser.parse_keyword(Keyword::FORCE);
+            AlterTagOperation::SetDataMovementPolicy { policy, force }
+        } else {
+            let policies = parse_masking_policy_list(parser)?;
+            let force = parser.parse_keyword(Keyword::FORCE);
+            AlterTagOperation::SetMaskingPolicy { policies, force }
+        }
     } else if parser.parse_keyword(Keyword::UNSET) {
+        if parser.parse_keywords(&[Keyword::DATA, Keyword::MOVEMENT, Keyword::POLICY]) {
+            return parser.expected("data movement policy name", parser.peek_token());
+        }
         if matches!(
             &parser.peek_token().token,
             Token::Word(word) if word.quote_style.is_none() && word.value.eq_ignore_ascii_case("DCM")
 
@@ -729,6 +729,7 @@ define_keywords!(
     MONITOR,
     MONTH,
     MONTHS,
+    MOVEMENT,
     MSCK,
     MULTIRANGE_TYPE_NAME,
     MULTISET,