diff --git a/UPGRADE.md b/UPGRADE.md
index a0a7327e6e8..955216026f1 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -8,6 +8,14 @@ awareness about deprecated code.
 
 # Upgrade to 3.2
 
+## Deprecated schema methods related to explicit foreign key indexes.
+
+The following methods have been deprecated:
+
+- `Schema::hasExplicitForeignKeyIndexes()`,
+- `SchemaConfig::hasExplicitForeignKeyIndexes()`,
+- `SchemaConfig::setExplicitForeignKeyIndexes()`.
+
 ## Deprecated `Schema::getTableNames()`.
 
 The `Schema::getTableNames()` method has been deprecated. In order to obtain schema table names,
diff --git a/src/Schema/Schema.php b/src/Schema/Schema.php
index fe7186fd499..1cc84e160be 100644
--- a/src/Schema/Schema.php
+++ b/src/Schema/Schema.php
@@ -89,6 +89,8 @@ public function __construct(
     }
 
     /**
+     * @deprecated
+     *
      * @return bool
      */
     public function hasExplicitForeignKeyIndexes()
diff --git a/src/Schema/SchemaConfig.php b/src/Schema/SchemaConfig.php
index 56d49c4a798..182451ddef5 100644
--- a/src/Schema/SchemaConfig.php
+++ b/src/Schema/SchemaConfig.php
@@ -7,7 +7,11 @@
  */
 class SchemaConfig
 {
-    /** @var bool */
+    /**
+     * @deprecated
+     *
+     * @var bool
+     */
     protected $hasExplicitForeignKeyIndexes = false;
 
     /** @var int */
@@ -20,6 +24,8 @@ class SchemaConfig
     protected $defaultTableOptions = [];
 
     /**
+     * @deprecated
+     *
      * @return bool
      */
     public function hasExplicitForeignKeyIndexes()
@@ -28,6 +34,8 @@ public function hasExplicitForeignKeyIndexes()
     }
 
     /**
+     * @deprecated
+     *
      * @param bool $flag
      *
      * @return void