diff --git a/config.md b/config.md
index 1a3e81627..67c7a4e30 100644
--- a/config.md
+++ b/config.md
@@ -124,6 +124,10 @@ Note: Any OPTIONAL field MAY also be set to null, which is equivalent to being a
      If there are no labels then this property MAY either be absent or an empty map.
      Implementations that are reading/processing this configuration file MUST NOT generate an error if they encounter an unknown labels key.
 
+  - **StopSignal** *string*, OPTIONAL
+
+    The field contains the signal to stop the container.
+
 - **rootfs** *object*, REQUIRED
 
    The rootfs key references the layer content addresses used by the image.
diff --git a/specs-go/v1/config.go b/specs-go/v1/config.go
index ddbc58622..88992ebaf 100644
--- a/specs-go/v1/config.go
+++ b/specs-go/v1/config.go
@@ -41,6 +41,9 @@ type ImageConfig struct {
 
 	// Labels contains arbitrary metadata for the container.
 	Labels map[string]string `json:"labels,omitempty"`
+
+	// StopSignal is the signal to stop the container.
+	StopSignal string `json:"StopSignal,omitempty"`
 }
 
 // RootFS describes a layer content addresses