diff --git a/package-lock.json b/package-lock.json
index decac54..e666bf3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16967,9 +16967,9 @@
       }
     },
     "typescript": {
-      "version": "4.0.6",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.6.tgz",
-      "integrity": "sha512-+eGgIo8Fl3l2B9Red9Q3VIkjMlUmaqELTJlsMqnHRe8V85DxJtr1q6Omjs0xBzXl0foNfCWu0fTf4jZ2LyWKPw=="
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.4.tgz",
+      "integrity": "sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg=="
     },
     "typescript-fsa": {
       "version": "3.0.0",
diff --git a/package.json b/package.json
index cba8bfa..b5e5ead 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
         "redux": "^4.1.0",
         "redux-saga": "^0.16.2",
         "sass": "^1.32.12",
-        "typescript": "^4.0.6",
+        "typescript": "^4.2.4",
         "typescript-fsa": "^3.0.0"
     },
     "scripts": {
diff --git a/src/pages/create/createSaga.ts b/src/pages/create/createSaga.ts
index a56bfa9..d18c244 100644
--- a/src/pages/create/createSaga.ts
+++ b/src/pages/create/createSaga.ts
@@ -8,10 +8,16 @@ import { IState } from "../../reducer";
 import { CardSetServiceId, ICardSetService } from "../../services/cardSets";
 import { Services } from "../../services/services";
 import { ISessionService, SessionServiceId } from "../../services/sessions";
-import { ITeamService, TeamServiceId } from "../../services/teams";
+import {
+    IIteration,
+    ITeam,
+    ITeamService,
+    TeamServiceId
+} from "../../services/teams";
 import { loadSessions } from "../home/sessionsActions";
 import * as Actions from "./createActions";
 import { IIdentityService, IdentityServiceId } from "../../services/identity";
+import { ICardSet } from "../../model/cards";
 
 export function* createSaga() {
     yield all([initSaga(), iterationSaga(), createSessionSaga()]);
@@ -37,7 +43,7 @@ export function* loadTeams() {
 
     // TODO: Get source from state?
     const teamService = Services.getService<ITeamService>(TeamServiceId);
-    const teams = yield call(
+    const teams: ITeam[] = yield call(
         [teamService, teamService.getAllTeams],
         projectInfo.id
     );
@@ -48,7 +54,10 @@ export function* loadTeams() {
 export function* loadCardSets() {
     const cardSetService =
         Services.getService<ICardSetService>(CardSetServiceId);
-    const cardSets = yield call([cardSetService, cardSetService.getSets]);
+    const cardSets: ICardSet[] = yield call([
+        cardSetService,
+        cardSetService.getSets
+    ]);
     yield put(Actions.setCardSets(cardSets));
 }
 
@@ -58,7 +67,7 @@ export function* iterationSaga() {
     );
 
     const teamService = Services.getService<ITeamService>(TeamServiceId);
-    const iterations = yield call(
+    const iterations: IIteration[] = yield call(
         [teamService, teamService.getIterationsForTeam],
         action.payload
     );
diff --git a/src/pages/session/channelSaga.ts b/src/pages/session/channelSaga.ts
index 4d9575f..54c16dc 100644
--- a/src/pages/session/channelSaga.ts
+++ b/src/pages/session/channelSaga.ts
@@ -8,7 +8,7 @@ import {
     take,
     takeEvery
 } from "redux-saga/effects";
-import { Action } from "typescript-fsa";
+import { Action, AnyAction } from "typescript-fsa";
 import { ISession } from "../../model/session";
 import { ISnapshot } from "../../model/snapshots";
 import { IChannel } from "../../services/channels/channels";
@@ -87,7 +87,7 @@ export function* channelSenderSaga(sessionId: string, channel: IChannel) {
 export function* channelListenerSaga(channel: IChannel) {
     const subscription: Channel<{}> = yield call(subscribe, channel);
     while (true) {
-        const action = yield take(subscription);
+        const action: AnyAction = yield take(subscription);
 
         switch (action.type) {
             case userJoined.type: {
diff --git a/src/pages/session/sessionSaga.ts b/src/pages/session/sessionSaga.ts
index da3d0a0..9e3e827 100644
--- a/src/pages/session/sessionSaga.ts
+++ b/src/pages/session/sessionSaga.ts
@@ -165,8 +165,8 @@ export function* sessionSaga(action: ReturnType<typeof loadSession>) {
             })
         );
 
-        const estimationTask = yield fork(sessionEstimationSaga);
-        const notificationTask = yield fork(notificationSaga);
+        const estimationTask: Task = yield fork(sessionEstimationSaga);
+        const notificationTask: Task = yield fork(notificationSaga);
 
         // Wait for leave or end
         const a:
diff --git a/tsconfig.json b/tsconfig.json
index 22c0f71..06bab39 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -15,7 +15,7 @@
         "resolveJsonModule": true,
         "isolatedModules": true,
         "noEmit": true,
-        "jsx": "react"
+        "jsx": "react-jsx"
     },
     "include": ["src"]
 }