diff --git a/exercises/04.router/03.problem.race-conditions/ui/index.js b/exercises/04.router/03.problem.race-conditions/ui/index.js
index e8cd5e0f..80ccbe1d 100644
--- a/exercises/04.router/03.problem.race-conditions/ui/index.js
+++ b/exercises/04.router/03.problem.race-conditions/ui/index.js
@@ -32,7 +32,7 @@ function Root() {
 	// 🐨 create a latestNav ref here which you can initialize to null if you like
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentPromise, setContentPromise] = useState(initialContentPromise)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 
@@ -65,7 +65,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/04.router/03.solution.race-conditions/ui/index.js b/exercises/04.router/03.solution.race-conditions/ui/index.js
index 5e500d2e..9c162b71 100644
--- a/exercises/04.router/03.solution.race-conditions/ui/index.js
+++ b/exercises/04.router/03.solution.race-conditions/ui/index.js
@@ -31,7 +31,7 @@ function Root() {
 	const latestNav = useRef(null)
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentPromise, setContentPromise] = useState(initialContentPromise)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 
@@ -64,7 +64,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/04.router/04.problem.history/ui/index.js b/exercises/04.router/04.problem.history/ui/index.js
index c82fd02a..dbd26dac 100644
--- a/exercises/04.router/04.problem.history/ui/index.js
+++ b/exercises/04.router/04.problem.history/ui/index.js
@@ -33,7 +33,7 @@ function Root() {
 	const latestNav = useRef(null)
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentPromise, setContentPromise] = useState(initialContentPromise)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 
@@ -76,7 +76,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/04.router/04.solution.history/ui/index.js b/exercises/04.router/04.solution.history/ui/index.js
index 7d417de9..6f4899ea 100644
--- a/exercises/04.router/04.solution.history/ui/index.js
+++ b/exercises/04.router/04.solution.history/ui/index.js
@@ -32,7 +32,7 @@ function Root() {
 	const latestNav = useRef(null)
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentPromise, setContentPromise] = useState(initialContentPromise)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 
@@ -79,7 +79,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/04.router/05.problem.cache/ui/index.js b/exercises/04.router/05.problem.cache/ui/index.js
index 35c60526..f97700a1 100644
--- a/exercises/04.router/05.problem.cache/ui/index.js
+++ b/exercises/04.router/05.problem.cache/ui/index.js
@@ -43,7 +43,7 @@ function Root() {
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	// 🐨 change this to contentKey
 	const [contentPromise, setContentPromise] = useState(initialContentPromise)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	// 🐨 get the contentPromise from the contentCache by the contentKey
@@ -102,7 +102,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/04.router/05.solution.cache/ui/index.js b/exercises/04.router/05.solution.cache/ui/index.js
index 5b5cb1a0..607e37d9 100644
--- a/exercises/04.router/05.solution.cache/ui/index.js
+++ b/exercises/04.router/05.solution.cache/ui/index.js
@@ -41,7 +41,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -96,7 +96,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/05.actions/01.problem.action-reference/ui/index.js b/exercises/05.actions/01.problem.action-reference/ui/index.js
index 5b5cb1a0..607e37d9 100644
--- a/exercises/05.actions/01.problem.action-reference/ui/index.js
+++ b/exercises/05.actions/01.problem.action-reference/ui/index.js
@@ -41,7 +41,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -96,7 +96,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/05.actions/01.solution.action-reference/ui/index.js b/exercises/05.actions/01.solution.action-reference/ui/index.js
index 5b5cb1a0..607e37d9 100644
--- a/exercises/05.actions/01.solution.action-reference/ui/index.js
+++ b/exercises/05.actions/01.solution.action-reference/ui/index.js
@@ -41,7 +41,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -96,7 +96,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/05.actions/02.problem.client/ui/index.js b/exercises/05.actions/02.problem.client/ui/index.js
index b615a2c7..def1ee58 100644
--- a/exercises/05.actions/02.problem.client/ui/index.js
+++ b/exercises/05.actions/02.problem.client/ui/index.js
@@ -52,7 +52,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -107,7 +107,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/05.actions/02.solution.client/ui/index.js b/exercises/05.actions/02.solution.client/ui/index.js
index 93975185..5262ec03 100644
--- a/exercises/05.actions/02.solution.client/ui/index.js
+++ b/exercises/05.actions/02.solution.client/ui/index.js
@@ -53,7 +53,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -108,7 +108,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise),
diff --git a/exercises/05.actions/03.problem.server/ui/index.js b/exercises/05.actions/03.problem.server/ui/index.js
index bb0d7584..52a9ea2b 100644
--- a/exercises/05.actions/03.problem.server/ui/index.js
+++ b/exercises/05.actions/03.problem.server/ui/index.js
@@ -53,7 +53,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -108,7 +108,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		// 🐨 the contentPromise is now an object with a root property, update this
diff --git a/exercises/05.actions/03.solution.server/ui/index.js b/exercises/05.actions/03.solution.server/ui/index.js
index 7cb9acea..63b09808 100644
--- a/exercises/05.actions/03.solution.server/ui/index.js
+++ b/exercises/05.actions/03.solution.server/ui/index.js
@@ -53,7 +53,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	const location = useDeferredValue(nextLocation)
 	const contentPromise = contentCache.get(contentKey)
@@ -108,7 +108,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise).root,
diff --git a/exercises/05.actions/04.problem.revalidation/ui/index.js b/exercises/05.actions/04.problem.revalidation/ui/index.js
index 753e4c8d..1fd0067d 100644
--- a/exercises/05.actions/04.problem.revalidation/ui/index.js
+++ b/exercises/05.actions/04.problem.revalidation/ui/index.js
@@ -80,7 +80,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	// 🐨 add a useEffect here that reassigns updateContentKey to a function that
 	// accepts a newContentKey and calls setContentKey(newContentKey) in a startTransition
@@ -141,7 +141,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise).root,
diff --git a/exercises/05.actions/04.solution.revalidation/ui/index.js b/exercises/05.actions/04.solution.revalidation/ui/index.js
index ddb7ac5d..e6c869ed 100644
--- a/exercises/05.actions/04.solution.revalidation/ui/index.js
+++ b/exercises/05.actions/04.solution.revalidation/ui/index.js
@@ -73,7 +73,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	// set the updateContentKey function in a useEffect to avoid issues with
 	// concurrent rendering (useDeferredValue will create throw-away renders).
@@ -136,7 +136,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise).root,
diff --git a/exercises/05.actions/05.problem.history-revalidation/ui/index.js b/exercises/05.actions/05.problem.history-revalidation/ui/index.js
index 015cbdc3..a0b0a846 100644
--- a/exercises/05.actions/05.problem.history-revalidation/ui/index.js
+++ b/exercises/05.actions/05.problem.history-revalidation/ui/index.js
@@ -73,7 +73,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	// set the updateContentKey function in a useEffect to avoid issues with
 	// concurrent rendering (useDeferredValue will create throw-away renders).
@@ -145,7 +145,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise).root,
diff --git a/exercises/05.actions/05.solution.history-revalidation/ui/index.js b/exercises/05.actions/05.solution.history-revalidation/ui/index.js
index a1bc3552..c4c835fe 100644
--- a/exercises/05.actions/05.solution.history-revalidation/ui/index.js
+++ b/exercises/05.actions/05.solution.history-revalidation/ui/index.js
@@ -73,7 +73,7 @@ function Root() {
 	const contentCache = useContentCache()
 	const [nextLocation, setNextLocation] = useState(getGlobalLocation)
 	const [contentKey, setContentKey] = useState(initialContentKey)
-	const [isPending, startTransition] = useTransition()
+	const [, startTransition] = useTransition()
 
 	// set the updateContentKey function in a useEffect to avoid issues with
 	// concurrent rendering (useDeferredValue will create throw-away renders).
@@ -142,7 +142,6 @@ function Root() {
 				navigate,
 				location,
 				nextLocation,
-				isPending,
 			},
 		},
 		use(contentPromise).root,