diff --git a/src/core/lombok/eclipse/handlers/HandleEqualsAndHashCode.java b/src/core/lombok/eclipse/handlers/HandleEqualsAndHashCode.java
index cf735dee..37379bb9 100755
--- a/src/core/lombok/eclipse/handlers/HandleEqualsAndHashCode.java
+++ b/src/core/lombok/eclipse/handlers/HandleEqualsAndHashCode.java
@@ -272,8 +272,10 @@ public class HandleEqualsAndHashCode extends EclipseAnnotationHandler<EqualsAndH
 		method.returnType = TypeReference.baseTypeReference(TypeIds.T_int, 0);
 		setGeneratedBy(method.returnType, source);
 		Annotation overrideAnnotation = makeMarkerAnnotation(TypeConstants.JAVA_LANG_OVERRIDE, source);
-		// TODO: maybe not add this annotation if cacheHashCode is true because we *do* modify a field
-		if (getCheckerFrameworkVersion(type).generateSideEffectFree()) {
+		CheckerFrameworkVersion checkerFramework = getCheckerFrameworkVersion(type);
+		if (cacheHashCode && checkerFramework.generatePure()) {
+			method.annotations = new Annotation[] { overrideAnnotation, generateNamedAnnotation(source, CheckerFrameworkVersion.NAME__PURE) };
+		} else if (checkerFramework.generateSideEffectFree()) {
 			method.annotations = new Annotation[] { overrideAnnotation, generateNamedAnnotation(source, CheckerFrameworkVersion.NAME__SIDE_EFFECT_FREE) };
 		} else {
 			method.annotations = new Annotation[] { overrideAnnotation };
diff --git a/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java b/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java
index 5b5595b5..c2da0274 100644
--- a/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java
+++ b/src/core/lombok/javac/handlers/HandleEqualsAndHashCode.java
@@ -234,8 +234,11 @@ public class HandleEqualsAndHashCode extends JavacAnnotationHandler<EqualsAndHas
 		JCAnnotation overrideAnnotation = maker.Annotation(genJavaLangTypeRef(typeNode, "Override"), List.<JCExpression>nil());
 		List<JCAnnotation> annsOnMethod = List.of(overrideAnnotation);
 		CheckerFrameworkVersion checkerFramework = getCheckerFrameworkVersion(typeNode);
-		// TODO: maybe not add this annotation if cacheHashCode is true because we *do* modify a field
-		if (checkerFramework.generateSideEffectFree()) annsOnMethod = annsOnMethod.prepend(maker.Annotation(genTypeRef(typeNode, CheckerFrameworkVersion.NAME__SIDE_EFFECT_FREE), List.<JCExpression>nil()));
+		if (cacheHashCode && checkerFramework.generatePure()) {
+			annsOnMethod = annsOnMethod.prepend(maker.Annotation(genTypeRef(typeNode, CheckerFrameworkVersion.NAME__PURE), List.<JCExpression>nil()));
+		} else if (checkerFramework.generateSideEffectFree()) { 
+			annsOnMethod = annsOnMethod.prepend(maker.Annotation(genTypeRef(typeNode, CheckerFrameworkVersion.NAME__SIDE_EFFECT_FREE), List.<JCExpression>nil()));
+		}
 		JCModifiers mods = maker.Modifiers(Flags.PUBLIC, annsOnMethod);
 		JCExpression returnType = maker.TypeIdent(CTC_INT);
 		ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>();