diff --git a/package.json b/package.json
index bfeec5f179..31f6e1b2ac 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     "gravatar-url": "^3.1.0",
     "helmet": "^4.1.0",
     "joi": "^17.3.0",
-    "js-yaml": "^3.14.0",
+    "js-yaml": "^4.1.0",
     "knex": "0.95.11",
     "log4js": "^6.0.0",
     "memoizee": "^0.4.15",
@@ -118,7 +118,7 @@
     "@types/express-session": "1.17.4",
     "@types/faker": "5.5.8",
     "@types/jest": "27.0.2",
-    "@types/js-yaml": "3.12.7",
+    "@types/js-yaml": "4.0.3",
     "@types/memoizee": "0.4.6",
     "@types/node": "16.6.1",
     "@types/node-fetch": "2.5.12",
diff --git a/src/lib/addons/slack.ts b/src/lib/addons/slack.ts
index 2251a2c9c8..24c5bc1061 100644
--- a/src/lib/addons/slack.ts
+++ b/src/lib/addons/slack.ts
@@ -123,7 +123,7 @@ This was changed by ${createdBy}.`;
         const stale = data.stale ? '("stale")' : '';
         const typeStr = `*Type*: ${data.type}`;
         const project = `*Project*: ${data.project}`;
-        const strategies = `*Activation strategies*: \`\`\`${YAML.safeDump(
+        const strategies = `*Activation strategies*: \`\`\`${YAML.dump(
             data.strategies,
             { skipInvalid: true },
         )}\`\`\``;
diff --git a/src/lib/addons/teams.ts b/src/lib/addons/teams.ts
index 6902661546..1c9c6c146e 100644
--- a/src/lib/addons/teams.ts
+++ b/src/lib/addons/teams.ts
@@ -109,7 +109,7 @@ export default class TeamsAddon extends Addon {
         const { data } = event;
         const typeStr = `*Type*: ${data.type}`;
         const project = `*Project*: ${data.project}`;
-        const strategies = `*Activation strategies*: \n${YAML.safeDump(
+        const strategies = `*Activation strategies*: \n${YAML.dump(
             data.strategies,
             { skipInvalid: true },
         )}`;
diff --git a/src/lib/routes/admin-api/state.ts b/src/lib/routes/admin-api/state.ts
index ee010bd47c..2ff57e322e 100644
--- a/src/lib/routes/admin-api/state.ts
+++ b/src/lib/routes/admin-api/state.ts
@@ -50,7 +50,7 @@ class StateController extends Controller {
             // @ts-ignore
             if (mime.getType(req.file.originalname) === 'text/yaml') {
                 // @ts-ignore
-                data = YAML.safeLoad(req.file.buffer);
+                data = YAML.load(req.file.buffer);
             } else {
                 // @ts-ignore
                 data = JSON.parse(req.file.buffer);
@@ -93,7 +93,7 @@ class StateController extends Controller {
             if (downloadFile) {
                 res.attachment(`export-${timestamp}.yml`);
             }
-            res.type('yaml').send(YAML.safeDump(data, { skipInvalid: true }));
+            res.type('yaml').send(YAML.dump(data, { skipInvalid: true }));
         } else {
             if (downloadFile) {
                 res.attachment(`export-${timestamp}.json`);
diff --git a/src/lib/services/state-util.ts b/src/lib/services/state-util.ts
index a576781ab1..3ec2a7278f 100644
--- a/src/lib/services/state-util.ts
+++ b/src/lib/services/state-util.ts
@@ -12,8 +12,7 @@ export const readFile: (file: string) => Promise<string> = (file) =>
 export const parseFile: (file: string, data: string) => any = (
     file: string,
     data: string,
-) =>
-    mime.lookup(file) === 'text/yaml' ? YAML.safeLoad(data) : JSON.parse(data);
+) => (mime.lookup(file) === 'text/yaml' ? YAML.load(data) : JSON.parse(data));
 
 export const filterExisting: (
     keepExisting: boolean,
diff --git a/yarn.lock b/yarn.lock
index 95d8e33f83..d77b2a0d49 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -794,10 +794,10 @@
     jest-diff "^27.0.0"
     pretty-format "^27.0.0"
 
-"@types/js-yaml@3.12.7":
-  version "3.12.7"
-  resolved "https://registry.yarnpkg.com/@types/js-yaml/-/js-yaml-3.12.7.tgz#330c5d97a3500e9c903210d6e49f02964af04a0e"
-  integrity sha512-S6+8JAYTE1qdsc9HMVsfY7+SgSuUU/Tp6TYTmITW0PZxiyIMvol3Gy//y69Wkhs0ti4py5qgR3uZH6uz/DNzJQ==
+"@types/js-yaml@4.0.3":
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/@types/js-yaml/-/js-yaml-4.0.3.tgz#9f33cd6fbf0d5ec575dc8c8fc69c7fec1b4eb200"
+  integrity sha512-5t9BhoORasuF5uCPr+d5/hdB++zRFUTMIZOzbNkr+jZh3yQht4HYbRDyj9fY8n2TZT30iW9huzav73x4NikqWg==
 
 "@types/json-schema@^7.0.7":
   version "7.0.9"
@@ -1200,6 +1200,11 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
+  integrity sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==
+
 arr-diff@^4.0.0:
   version "4.0.0"
   resolved "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz"
@@ -4392,7 +4397,7 @@ js-tokens@^4.0.0:
   resolved "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.13.1, js-yaml@^3.14.0:
+js-yaml@^3.13.1:
   version "3.14.1"
   resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz"
   integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
@@ -4400,6 +4405,13 @@ js-yaml@^3.13.1, js-yaml@^3.14.0:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.1.0.tgz#c1fb65f8f5017901cdd2c951864ba18458a10602"
+  integrity sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==
+  dependencies:
+    argparse "^2.0.1"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz"