diff --git a/.changeset/red-bats-lie.md b/.changeset/red-bats-lie.md
new file mode 100644
index 000000000..6e2c9d48a
--- /dev/null
+++ b/.changeset/red-bats-lie.md
@@ -0,0 +1,5 @@
+---
+"@reach/portal": patch
+---
+
+Support remounting <Portal> component inside of React's <Activity> component
diff --git a/packages/portal/src/reach-portal.tsx b/packages/portal/src/reach-portal.tsx
index 9811d07e6..b88e4108f 100644
--- a/packages/portal/src/reach-portal.tsx
+++ b/packages/portal/src/reach-portal.tsx
@@ -71,6 +71,7 @@ const PortalImpl: React.FC<PortalProps> = ({
 		return () => {
 			if (portalNode.current && body) {
 				body.removeChild(portalNode.current);
+				portalNode.current = null;
 			}
 		};
 	}, [type, forceUpdate, containerRef]);