diff --git a/index.ts b/index.ts
index 5585ee4..d2b332c 100644
--- a/index.ts
+++ b/index.ts
@@ -9,6 +9,7 @@ import {
 } from "not-valid";
 
 import { BehaviorSubject, Observable } from "rxjs";
+import { debounceTime, switchMap } from "rxjs/operators";
 
 const DEBOUNCE_WAIT_PERIOD = process.env.NOT_VALID_KNOCKOUT_DEBOUNCE !== undefined
     ? +process.env.NOT_VALID_KNOCKOUT_DEBOUNCE
@@ -38,8 +39,10 @@ const createKnockoutWrapper = (validationSystem?: ValidateFunction) => {
         const subject = new BehaviorSubject<T>(initialValue);
 
         const resultObservable = subject
-            .debounceTime(DEBOUNCE_WAIT_PERIOD)
-            .switchMap(async value => await validate(validators, value));
+            .pipe(
+                debounceTime(DEBOUNCE_WAIT_PERIOD),
+                switchMap(async value => await validate(validators, value))
+            );
 
         resultObservable.subscribe(errors => errorObservable(errors));
 
diff --git a/package-lock.json b/package-lock.json
index bf53750..9cad7f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -772,11 +772,11 @@
       }
     },
     "rxjs": {
-      "version": "5.5.12",
-      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-5.5.12.tgz",
-      "integrity": "sha512-xx2itnL5sBbqeeiVgNPVuQQ1nC8Jp2WfNJhXWHmElW9YmrpS9UVnNzhP3EH3HFqexO5Tlp8GhYY+WEcqcVMvGw==",
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.5.4.tgz",
+      "integrity": "sha512-naMQXcgEo3csAEGvw/NydRA0fuS2nDZJiw1YUWFKU7aPPAPGZEsD4Iimit96qwCieH6y614MCLYwdkrWx7z/7Q==",
       "requires": {
-        "symbol-observable": "1.0.1"
+        "tslib": "^1.9.0"
       }
     },
     "safe-buffer": {
@@ -938,11 +938,6 @@
         "has-flag": "^3.0.0"
       }
     },
-    "symbol-observable": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.0.1.tgz",
-      "integrity": "sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ="
-    },
     "tap-bark": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/tap-bark/-/tap-bark-2.3.1.tgz",
@@ -1042,8 +1037,7 @@
     "tslib": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
-      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==",
-      "dev": true
+      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ=="
     },
     "tslint": {
       "version": "5.20.1",
diff --git a/package.json b/package.json
index be602b2..d9c543a 100644
--- a/package.json
+++ b/package.json
@@ -32,18 +32,21 @@
   },
   "homepage": "https://github.com/NewOrbit/not-valid-knockout#readme",
   "dependencies": {
-    "not-valid": "2.0.0",
-    "@types/knockout": "^3.4.40",
-    "@types/node": "^12.12.8",
-    "rxjs": "^5.5.0"
+    "not-valid": "2.0.0"
   },
   "devDependencies": {
+    "@types/node": "^12.12.8",
+    "@types/knockout": "^3.4.40",
     "@neworbit/knockout-test-utils": "0.0.2",
     "alsatian": "^3.1.0",
     "chalk": "^2.4.2",
     "neworbit-tslint-config": "^2.0.0",
+    "rxjs": "^6.5.4",
     "tap-xunit": "^2.2.0",
     "tslint": "^5.2.0",
     "typescript": "^3.7.2"
+  },
+  "peerDependencies": {
+    "rxjs": "6.x"
   }
 }