diff --git a/.changeset/friendly-ducks-rush.md b/.changeset/friendly-ducks-rush.md
new file mode 100644
index 00000000..189548ca
--- /dev/null
+++ b/.changeset/friendly-ducks-rush.md
@@ -0,0 +1,5 @@
+---
+"@farfetched/core": minor
+---
+
+Runtime deprecation warnings about `concurrency` field in `createJsonQuery` and `createJsonMutation`
diff --git a/.changeset/pretty-mails-switch.md b/.changeset/pretty-mails-switch.md
deleted file mode 100644
index 2f0d3d5c..00000000
--- a/.changeset/pretty-mails-switch.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@farfetched/core": minor
----
-
-Runtime deprecation warning in `attachOperation`
diff --git a/apps/website/docs/releases/0-13.md b/apps/website/docs/releases/0-13.md
index e10f8854..4b698ebf 100644
--- a/apps/website/docs/releases/0-13.md
+++ b/apps/website/docs/releases/0-13.md
@@ -8,4 +8,8 @@ TODO:
 
 This operator is deprecated since [v0.12](/releases/0-12) and will be removed in v0.14. Please read [this ADR](/adr/attach_operation_deprecation) for more information and migration guide.
 
+### `concurrency` operator
+
+Field `concurrency` in `createJsonQuery` and `createJsonMutation` is deprecated since [v0.12](/releases/0-12) and has to be replaced by the [`concurrency` operator](/api/operators/concurrency). Please read [this ADR](/adr/concurrency) for more information and migration guide.
+
 <!--@include: ./0-13.changelog.md-->
diff --git a/packages/core/src/mutation/create_json_mutation.ts b/packages/core/src/mutation/create_json_mutation.ts
index 5bd4e8fb..6f33fdde 100644
--- a/packages/core/src/mutation/create_json_mutation.ts
+++ b/packages/core/src/mutation/create_json_mutation.ts
@@ -266,6 +266,10 @@ export function createJsonMutation(config: any): Mutation<any, any, any> {
 
   /* TODO: in future releases we will remove this code and make concurrency a separate function */
   if (config.concurrency) {
+    console.error(
+      'concurrency field in createJsonMutation is deprecated, please use concurrency operator instead: https://farfetched.pages.dev/adr/concurrency'
+    );
+
     op.__.meta.flags.concurrencyFieldUsed = true;
   }
 
diff --git a/packages/core/src/query/create_json_query.ts b/packages/core/src/query/create_json_query.ts
index 2c18ca4f..06cd5036 100644
--- a/packages/core/src/query/create_json_query.ts
+++ b/packages/core/src/query/create_json_query.ts
@@ -394,11 +394,19 @@ export function createJsonQuery(config: any) {
 
   /* TODO: in future releases we will remove this code and make concurrency a separate function */
   if (config.concurrency) {
+    console.error(
+      'concurrency field in createJsonQuery is deprecated, please use concurrency operator instead: https://farfetched.pages.dev/adr/concurrency'
+    );
+
     op.__.meta.flags.concurrencyFieldUsed = true;
   }
 
   setTimeout(() => {
     if (!op.__.meta.flags.concurrencyOperatorUsed) {
+      console.error(
+        'Please apply concurrency operator to the query, read more: https://farfetched.pages.dev/adr/concurrency'
+      );
+
       concurrency(op, {
         strategy: config.concurrency?.strategy ?? 'TAKE_LATEST',
         abortAll: config.concurrency?.abort,