diff --git a/CHANGELOG.md b/CHANGELOG.md
index 043da07b31..710526575d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Unreleased
 
 - Expose session timeout. #887
+- Added `event.origin` and `event.environment` tags to determine where events originate from. #890
 
 ## 1.4.1
 
@@ -134,7 +135,7 @@ New way to import and init the SDK:
 import * as Sentry from "@sentry/react-native";
 
 Sentry.init({
-  dsn: "DSN",
+  dsn: "DSN"
 });
 ```
 
@@ -370,7 +371,7 @@ To activate it set:
 
 ```js
 Sentry.config("___DSN___", {
-  deactivateStacktraceMerging: false,
+  deactivateStacktraceMerging: false
 });
 ```
 
diff --git a/RNSentry.podspec b/RNSentry.podspec
index 1879ec9e81..d36892e92b 100644
--- a/RNSentry.podspec
+++ b/RNSentry.podspec
@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   s.preserve_paths = '*.js'
 
   s.dependency 'React'
-  s.dependency 'Sentry', '~> 5.1.0'
+  s.dependency 'Sentry', '~> 5.1.1'
 
   s.source_files = 'ios/RNSentry.{h,m}'
   s.public_header_files = 'ios/RNSentry.h'
diff --git a/android/src/main/java/io/sentry/RNSentryModule.java b/android/src/main/java/io/sentry/RNSentryModule.java
index 0a699a5505..904dfc0074 100644
--- a/android/src/main/java/io/sentry/RNSentryModule.java
+++ b/android/src/main/java/io/sentry/RNSentryModule.java
@@ -28,9 +28,11 @@
 import io.sentry.android.core.AnrIntegration;
 import io.sentry.android.core.NdkIntegration;
 import io.sentry.android.core.SentryAndroid;
+import io.sentry.core.Sentry;
 import io.sentry.core.Integration;
 import io.sentry.core.SentryOptions;
 import io.sentry.core.UncaughtExceptionHandlerIntegration;
+import io.sentry.core.protocol.SdkVersion;
 import io.sentry.core.protocol.SentryException;
 
 @ReactModule(name = RNSentryModule.NAME)
@@ -108,6 +110,27 @@ public void startWithOptions(final ReadableMap rnOptions, Promise promise) {
                 } catch (Exception e) {
                     // We do nothing
                 }
+
+                // Add on the correct event.origin tag.
+                // it needs to be here so we can determine where it originated from.
+                SdkVersion sdkVersion = event.getSdk();
+                if (sdkVersion != null) {
+                    String sdkName = sdkVersion.getName();
+                    if (sdkName != null) {
+                        if (sdkName.equals("sentry.javascript.react-native")) {
+                            event.setTag("event.origin", "javascript");
+                        } else if (sdkName.equals("sentry.java.android") || sdkName.equals("sentry.native")) {
+                            event.setTag("event.origin", "android");
+
+                            if (sdkName.equals("sentry.native")) {
+                                event.setTag("event.environment", "native");
+                            } else {
+                                event.setTag("event.environment", "java");
+                            }
+                        }
+                    }
+                }
+
                 return event;
             });
 
diff --git a/ios/RNSentry.m b/ios/RNSentry.m
index 19ff93bc12..fba04a5564 100644
--- a/ios/RNSentry.m
+++ b/ios/RNSentry.m
@@ -46,6 +46,14 @@ + (BOOL)requiresMainQueueSetup {
             return nil;
         }
 
+        // set the event.origin tag to be ios if the event originated from the sentry-cocoa sdk.
+        if (event.sdk && [event.sdk[@"name"] isEqualToString:@"sentry.cocoa"]) {
+            NSMutableDictionary *newTags = [NSMutableDictionary new];
+            [newTags addEntriesFromDictionary:event.tags];
+            [newTags setValue:@"ios" forKey:@"event.origin"];
+            event.tags = newTags;
+        }
+
         return event;
     };
 
diff --git a/sample/ios/Podfile.lock b/sample/ios/Podfile.lock
index f3d732a9e6..f875cd2a9b 100644
--- a/sample/ios/Podfile.lock
+++ b/sample/ios/Podfile.lock
@@ -292,12 +292,12 @@ PODS:
     - React-cxxreact (= 0.62.2)
     - React-jsi (= 0.62.2)
     - ReactCommon/callinvoker (= 0.62.2)
-  - RNSentry (1.3.9):
+  - RNSentry (1.4.1):
     - React
-    - Sentry (~> 5.1.0)
-  - Sentry (5.1.0):
-    - Sentry/Core (= 5.1.0)
-  - Sentry/Core (5.1.0)
+    - Sentry (~> 5.1.1)
+  - Sentry (5.1.1):
+    - Sentry/Core (= 5.1.1)
+  - Sentry/Core (5.1.1)
   - Yoga (1.14.0)
   - YogaKit (1.18.1):
     - Yoga (~> 1.14)
@@ -458,11 +458,11 @@ SPEC CHECKSUMS:
   React-RCTText: fae545b10cfdb3d247c36c56f61a94cfd6dba41d
   React-RCTVibration: 4356114dbcba4ce66991096e51a66e61eda51256
   ReactCommon: ed4e11d27609d571e7eee8b65548efc191116eb3
-  RNSentry: 20f609597e89e7a47a553e1e8a82abc0207a6bd9
-  Sentry: 01008d590825eb1c02a796cbdced2cd3625f61e4
+  RNSentry: 451cb0e69830a682d8ca33ead8e9953688a9eff8
+  Sentry: a8e37dc33aedb8a53540e36607fc2eaef7c31b4f
   Yoga: 3ebccbdd559724312790e7742142d062476b698e
   YogaKit: f782866e155069a2cca2517aafea43200b01fd5a
 
-PODFILE CHECKSUM: 37ff82402d037e0662e07ec778dac86a7460fd84
+PODFILE CHECKSUM: 7d26d6f146f06216129da20c128ed24b666d4bb5
 
 COCOAPODS: 1.9.2
diff --git a/src/js/sdk.ts b/src/js/sdk.ts
index 4b04d612a9..9d20f82ece 100644
--- a/src/js/sdk.ts
+++ b/src/js/sdk.ts
@@ -90,6 +90,9 @@ export function init(
   //   });
   // }
 
+  // set the event.origin tag.
+  getCurrentHub().setTag("event.origin", "javascript");
+
   // tslint:disable-next-line: no-unsafe-any
   if (getGlobalObject<any>().HermesInternal) {
     getCurrentHub().setTag("hermes", "true");