diff --git a/tests/integration/fuzz/mod.rs b/tests/integration/fuzz/mod.rs
index e9b81cd33..803b3046d 100644
--- a/tests/integration/fuzz/mod.rs
+++ b/tests/integration/fuzz/mod.rs
@@ -1952,7 +1952,16 @@ mod tests {
                 };
 
                 let query = if do_update {
-                    let new_y = rng.random_range(0..1000);
+                    let new_y = if rng.random_bool(0.5) {
+                        // Update to a constant value
+                        rng.random_range(0..1000).to_string()
+                    } else {
+                        let source_col = rng.random_range(0..num_cols);
+                        // Update to a value that is a function of the another column
+                        let operator = *["+", "-"].choose(&mut rng).unwrap();
+                        let amount = rng.random_range(0..1000);
+                        format!("c{source_col} {operator} {amount}")
+                    };
                     format!("UPDATE t SET c{affected_col} = {new_y} {where_clause}")
                 } else {
                     format!("DELETE FROM t {where_clause}")