diff --git a/dev-lang/swift/metadata.xml b/dev-lang/swift/metadata.xml
index 810cc5c5af..415909a000 100644
--- a/dev-lang/swift/metadata.xml
+++ b/dev-lang/swift/metadata.xml
@@ -8,4 +8,15 @@
   <upstream>
     <remote-id type="github">swiftlang/swift</remote-id>
   </upstream>
+  <slots>
+    <slot name="0">
+      The original slot for swift-5.10.1; should no longer be used.
+    </slot>
+    <slot name="5">
+      The Swift 5 language, compiler, and tooling.
+    </slot>
+    <subslots>
+      Minor Swift versions.
+    </subslots>
+  </slots>
 </pkgmetadata>
diff --git a/dev-lang/swift/swift-5.10.1-r1.ebuild b/dev-lang/swift/swift-5.10.1-r1.ebuild
index 0a49073ff4..3440d11832 100644
--- a/dev-lang/swift/swift-5.10.1-r1.ebuild
+++ b/dev-lang/swift/swift-5.10.1-r1.ebuild
@@ -56,7 +56,7 @@ PATCHES=(
 
 S="${WORKDIR}"
 LICENSE="Apache-2.0"
-SLOT="0"
+SLOT="5/10"
 KEYWORDS="~amd64"
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"