diff --git a/diesel/src/pg/connection/result.rs b/diesel/src/pg/connection/result.rs
index a5542d0a51ce..9563445912fb 100644
--- a/diesel/src/pg/connection/result.rs
+++ b/diesel/src/pg/connection/result.rs
@@ -73,6 +73,12 @@ impl PgResult {
                             DatabaseErrorKind::NotNullViolation
                         }
                         Some(error_codes::CHECK_VIOLATION) => DatabaseErrorKind::CheckViolation,
+                        Some(error_codes::RESTRICT_VIOLATION) => {
+                            DatabaseErrorKind::RestrictViolation
+                        }
+                        Some(error_codes::EXCLUSION_VIOLATION) => {
+                            DatabaseErrorKind::ExclusionViolation
+                        }
                         Some(error_codes::CONNECTION_EXCEPTION)
                         | Some(error_codes::CONNECTION_FAILURE)
                         | Some(error_codes::SQLCLIENT_UNABLE_TO_ESTABLISH_SQLCONNECTION)
@@ -269,10 +275,12 @@ mod error_codes {
     pub(in crate::pg::connection) const SQLCLIENT_UNABLE_TO_ESTABLISH_SQLCONNECTION: &str = "08001";
     pub(in crate::pg::connection) const SQLSERVER_REJECTED_ESTABLISHMENT_OF_SQLCONNECTION: &str =
         "08004";
+    pub(in crate::pg::connection) const RESTRICT_VIOLATION: &str = "23001";
     pub(in crate::pg::connection) const NOT_NULL_VIOLATION: &str = "23502";
     pub(in crate::pg::connection) const FOREIGN_KEY_VIOLATION: &str = "23503";
     pub(in crate::pg::connection) const UNIQUE_VIOLATION: &str = "23505";
     pub(in crate::pg::connection) const CHECK_VIOLATION: &str = "23514";
+    pub(in crate::pg::connection) const EXCLUSION_VIOLATION: &str = "23P01";
     pub(in crate::pg::connection) const READ_ONLY_TRANSACTION: &str = "25006";
     pub(in crate::pg::connection) const SERIALIZATION_FAILURE: &str = "40001";
 }
diff --git a/diesel/src/result.rs b/diesel/src/result.rs
index 92c4937fa9ca..130c0167acc0 100644
--- a/diesel/src/result.rs
+++ b/diesel/src/result.rs
@@ -133,12 +133,18 @@ pub enum DatabaseErrorKind {
     /// to lock the rows.
     ReadOnlyTransaction,
 
+    /// A restrict constraint was violated.
+    RestrictViolation,
+
     /// A not null constraint was violated.
     NotNullViolation,
 
     /// A check constraint was violated.
     CheckViolation,
 
+    /// An exclusion constraint was violated.
+    ExclusionViolation,
+
     /// The connection to the server was unexpectedly closed.
     ///
     /// This error is only detected for PostgreSQL and is emitted on a best-effort basis