diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
index 08367cb90f925..8f57ca3c6b977 100644
--- a/docs/reference-guides/core-blocks.md
+++ b/docs/reference-guides/core-blocks.md
@@ -725,7 +725,7 @@ Create a break between ideas or sections with a horizontal separator. ([Source](
 
 -	**Name:** core/separator
 -	**Category:** design
--	**Supports:** align (center, full, wide), anchor, color (background, gradients, ~~text~~)
+-	**Supports:** align (center, full, wide), anchor, color (background, gradients, ~~text~~), spacing (margin)
 -	**Attributes:** opacity
 
 ## Shortcode
diff --git a/packages/block-library/src/separator/block.json b/packages/block-library/src/separator/block.json
index 384d3826f34ed..ea37e4ea41065 100644
--- a/packages/block-library/src/separator/block.json
+++ b/packages/block-library/src/separator/block.json
@@ -24,6 +24,9 @@
 			"__experimentalDefaultControls": {
 				"background": true
 			}
+		},
+		"spacing": {
+			"margin": [ "top", "bottom" ]
 		}
 	},
 	"styles": [