diff --git a/packages/devtools-react/src/index.tsx b/packages/devtools-react/src/index.tsx
index 6be13cfe..516cbe25 100644
--- a/packages/devtools-react/src/index.tsx
+++ b/packages/devtools-react/src/index.tsx
@@ -272,7 +272,7 @@ export function JsonRenderDevtools(props: JsonRenderDevtoolsProps) {
     handleRef.current = panel;
 
     // Highlight in the host DOM as the selection changes.
-    const unsubSelection = selection.subscribe((key) => {
+    const unsubSelection = selection.subscribe((key: unknown) => {
       if (key) highlightElement(key);
     });
 
diff --git a/packages/devtools-solid/src/index.tsx b/packages/devtools-solid/src/index.tsx
index 53a5b9e4..8aec1e64 100644
--- a/packages/devtools-solid/src/index.tsx
+++ b/packages/devtools-solid/src/index.tsx
@@ -141,7 +141,7 @@ export function JsonRenderDevtools(props: JsonRenderDevtoolsProps) {
       reserveSpace: props.reserveSpace,
       allowDockToggle: props.allowDockToggle,
     });
-    unsubSelection = selection.subscribe((key) => {
+    unsubSelection = selection.subscribe((key: unknown) => {
       if (key) highlightElement(key);
     });
     releaseActive = markDevtoolsActive();