diff --git a/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1/api.proto b/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1/api.proto
index afeec456305..6556003921c 100644
--- a/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1/api.proto
+++ b/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1/api.proto
@@ -583,6 +583,8 @@ message LinuxContainerResources {
     // Each key/value in the map refers to the cgroup v2.
     // e.g. "memory.max": "6937202688" or "io.weight": "default 100".
     map<string, string> unified = 9;
+    // Memory swap limit in bytes. Default 0 (not specified).
+    int64 memory_swap_limit_in_bytes = 10;
 }
 
 // HugepageLimit corresponds to the file`hugetlb.<hugepagesize>.limit_in_byte` in container level cgroup.
diff --git a/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1alpha2/api.proto b/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1alpha2/api.proto
index d25958beef6..1e579187f96 100644
--- a/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1alpha2/api.proto
+++ b/staging/src/k8s.io/cri-api/pkg/apis/runtime/v1alpha2/api.proto
@@ -589,6 +589,8 @@ message LinuxContainerResources {
     // Each key/value in the map refers to the cgroup v2.
     // e.g. "memory.max": "6937202688" or "io.weight": "default 100".
     map<string, string> unified = 9;
+    // Memory swap limit in bytes. Default 0 (not specified).
+    int64 memory_swap_limit_in_bytes = 10;
 }
 
 // HugepageLimit corresponds to the file`hugetlb.<hugepagesize>.limit_in_byte` in container level cgroup.