diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ceed3f57..193125de9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,7 +15,7 @@
 * properly display "Messages are end-to-end encrypted." in all encrypted groups
 * several small fixes and improvements
 * add experimental built-in calls
-* update to core 2.13.0
+* update to core 2.16.0
 
 ## v2.11.0
 2025-08
diff --git a/README.md b/README.md
index 945f2a11f..12329ca50 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,28 @@ subproject _deltachat-core-rust_:
   or later by `git submodule update --init --recursive`. If you do this in your
   home directory, this results in the folder `~/deltachat-android` which is just fine.
 
+# Generate JSON-RPC bindings
+
+To generate the JSON-RPC bindings (ex. `chat.delta.rpc.*` package)
+install the [dcrpcgen tool](https://github.com/chatmail/dcrpcgen)
+then generate the `schema.json` file:
+
+```
+# install deltachat-rpc-server program:
+cargo install --path ./jni/deltachat-core-rust/deltachat-rpc-server
+# check the version of core matches:
+deltachat-rpc-server --version
+# generate the schema:
+deltachat-rpc-server --openrpc > schema.json
+```
+
+then pass the schema file to the `dcrpcgen` tool to generate the
+code:
+
+```
+dcrpcgen java --schema schema.json -o ./src/main/java/
+```
+
 # Build Using Nix
 
 The repository contains [Nix](https://nixos.org/) development environment
diff --git a/jni/deltachat-core-rust b/jni/deltachat-core-rust
index ba2e573c2..570a9993f 160000
--- a/jni/deltachat-core-rust
+++ b/jni/deltachat-core-rust
@@ -1 +1 @@
-Subproject commit ba2e573c2358f7c29bf3ad3bb082dd74da167261
+Subproject commit 570a9993f73ad8d186a3ed810a185e0ca7e1f5ca
diff --git a/src/main/java/chat/delta/rpc/types/CallInfo.java b/src/main/java/chat/delta/rpc/types/CallInfo.java
index f75708d86..dd177c186 100644
--- a/src/main/java/chat/delta/rpc/types/CallInfo.java
+++ b/src/main/java/chat/delta/rpc/types/CallInfo.java
@@ -13,7 +13,7 @@ public class CallInfo {
   /**
    * Call state.
    * <p>
-   * For example, if the call is accepted, active, cancelled, declined etc.
+   * For example, if the call is accepted, active, canceled, declined etc.
    */
   public CallState state;
 }
\ No newline at end of file
diff --git a/src/main/java/chat/delta/rpc/types/CallState.java b/src/main/java/chat/delta/rpc/types/CallState.java
index 6030db9dd..b18577053 100644
--- a/src/main/java/chat/delta/rpc/types/CallState.java
+++ b/src/main/java/chat/delta/rpc/types/CallState.java
@@ -8,7 +8,7 @@ import com.fasterxml.jackson.annotation.JsonTypeInfo.Id;
 import com.fasterxml.jackson.annotation.JsonTypeInfo.As;
 
 @JsonTypeInfo(use=Id.NAME, include=As.PROPERTY, property="kind")
-@JsonSubTypes({@Type(value = CallState.Alerting.class, name="Alerting"), @Type(value = CallState.Active.class, name="Active"), @Type(value = CallState.Completed.class, name="Completed"), @Type(value = CallState.Missed.class, name="Missed"), @Type(value = CallState.Declined.class, name="Declined"), @Type(value = CallState.Cancelled.class, name="Cancelled")})
+@JsonSubTypes({@Type(value = CallState.Alerting.class, name="Alerting"), @Type(value = CallState.Active.class, name="Active"), @Type(value = CallState.Completed.class, name="Completed"), @Type(value = CallState.Missed.class, name="Missed"), @Type(value = CallState.Declined.class, name="Declined"), @Type(value = CallState.Canceled.class, name="Canceled")})
 public abstract class CallState {
 
 /**
@@ -38,11 +38,11 @@ public abstract class CallState {
   }
 
 /**
- * Outgoing call that has been cancelled on our side before receiving a response.
+ * Outgoing call that has been canceled on our side before receiving a response.
  * <p>
- * Incoming calls cannot be cancelled, on the receiver side cancelled calls usually result in missed calls.
+ * Incoming calls cannot be canceled, on the receiver side canceled calls usually result in missed calls.
  */
-  public static class Cancelled extends CallState {
+  public static class Canceled extends CallState {
   }
 
 }
\ No newline at end of file
diff --git a/src/main/java/org/thoughtcrime/securesms/components/CallItemView.java b/src/main/java/org/thoughtcrime/securesms/components/CallItemView.java
index fe6dcdbad..d9fdf3136 100644
--- a/src/main/java/org/thoughtcrime/securesms/components/CallItemView.java
+++ b/src/main/java/org/thoughtcrime/securesms/components/CallItemView.java
@@ -63,7 +63,7 @@ public class CallItemView extends FrameLayout {
 
     if (callInfo.state instanceof CallState.Missed) {
       title.setText(R.string.missed_call);
-    } else if (callInfo.state instanceof CallState.Cancelled) {
+    } else if (callInfo.state instanceof CallState.Canceled) {
       title.setText(R.string.canceled_call);
     } else if (callInfo.state instanceof CallState.Declined) {
       title.setText(R.string.declined_call);
diff --git a/src/main/java/org/thoughtcrime/securesms/connect/DcHelper.java b/src/main/java/org/thoughtcrime/securesms/connect/DcHelper.java
index 837137ed6..79ae61ee4 100644
--- a/src/main/java/org/thoughtcrime/securesms/connect/DcHelper.java
+++ b/src/main/java/org/thoughtcrime/securesms/connect/DcHelper.java
@@ -244,6 +244,11 @@ public class DcHelper {
     dcContext.setStockTranslation(177, context.getString(R.string.reaction_by_other));
     dcContext.setStockTranslation(190, context.getString(R.string.secure_join_wait));
     dcContext.setStockTranslation(193, context.getString(R.string.donate_device_msg));
+    dcContext.setStockTranslation(194, context.getString(R.string.outgoing_call));
+    dcContext.setStockTranslation(195, context.getString(R.string.incoming_call));
+    dcContext.setStockTranslation(196, context.getString(R.string.declined_call));
+    dcContext.setStockTranslation(197, context.getString(R.string.canceled_call));
+    dcContext.setStockTranslation(198, context.getString(R.string.missed_call));
   }
 
   public static File getImexDir() {