diff --git a/webapp/src/blocks/archive.ts b/webapp/src/blocks/archive.ts
index 6e2e6c921..fb1ec743f 100644
--- a/webapp/src/blocks/archive.ts
+++ b/webapp/src/blocks/archive.ts
@@ -9,7 +9,7 @@ interface ArchiveHeader {
 
 interface ArchiveLine {
     type: string,
-    data: any,
+    data: unknown,
 }
 
 // This schema allows the expansion of additional line types in the future
diff --git a/webapp/src/telemetry/telemetryClient.ts b/webapp/src/telemetry/telemetryClient.ts
index 6da84a015..4c09cd8b1 100644
--- a/webapp/src/telemetry/telemetryClient.ts
+++ b/webapp/src/telemetry/telemetryClient.ts
@@ -28,7 +28,7 @@ class TelemetryClient {
         this.user = user
     }
 
-    trackEvent(category: string, event: string, props?: any): void {
+    trackEvent(category: string, event: string, props?: unknown): void {
         if (this.telemetryHandler) {
             const userId = this.user?.id
             this.telemetryHandler.trackEvent(userId || '', '', category, event, props)
diff --git a/webapp/src/testUtils.tsx b/webapp/src/testUtils.tsx
index 920deea48..4f4bf46ef 100644
--- a/webapp/src/testUtils.tsx
+++ b/webapp/src/testUtils.tsx
@@ -31,7 +31,7 @@ export function mockDOM(): void {
         return range
     }
 }
-export function mockMatchMedia(result: any): void {
+export function mockMatchMedia(result: {matches: boolean}): void {
     // We check if system preference is dark or light theme.
     // This is required to provide it's definition since
     // window.matchMedia doesn't exist in Jest.