diff --git a/.changeset/loud-jobs-follow.md b/.changeset/loud-jobs-follow.md
new file mode 100644
index 000000000..cf663aa78
--- /dev/null
+++ b/.changeset/loud-jobs-follow.md
@@ -0,0 +1,5 @@
+---
+"@flint.fyi/ts": patch
+---
+
+fix(ts): [chainedAssignments] allow non-assignment right-side operators
diff --git a/packages/ts/src/rules/chainedAssignments.test.ts b/packages/ts/src/rules/chainedAssignments.test.ts
index 79d73d899..04ec19143 100644
--- a/packages/ts/src/rules/chainedAssignments.test.ts
+++ b/packages/ts/src/rules/chainedAssignments.test.ts
@@ -234,6 +234,30 @@ class MyClass {
         second = 0;
     }
 }
+`,
+		`
+let result = "";
+result += "a" + "b";
+`,
+		`
+let result = 0;
+result += 1 + 2;
+`,
+		`
+let result = 0;
+result += 1 * 2;
+`,
+		`
+let result = 0;
+result += 1 - 2;
+`,
+		`
+let result = 0;
+result += 1 / 2;
+`,
+		`
+let result = 0;
+result += 1 ** 2;
 `,
 	],
 });
diff --git a/packages/ts/src/rules/chainedAssignments.ts b/packages/ts/src/rules/chainedAssignments.ts
index ca41f51a2..cd89a8878 100644
--- a/packages/ts/src/rules/chainedAssignments.ts
+++ b/packages/ts/src/rules/chainedAssignments.ts
@@ -35,7 +35,10 @@ export default typescriptLanguage.createRule({
 					}
 
 					const rightSide = unwrapParenthesizedExpression(node.right);
-					if (!ts.isBinaryExpression(rightSide)) {
+					if (
+						!ts.isBinaryExpression(rightSide) ||
+						!tsutils.isAssignmentKind(rightSide.operatorToken.kind)
+					) {
 						return;
 					}