diff --git a/schemas/v3.0/schema.yaml b/schemas/v3.0/schema.yaml
index 7c70ec8cab..babc5c5f37 100644
--- a/schemas/v3.0/schema.yaml
+++ b/schemas/v3.0/schema.yaml
@@ -806,7 +806,8 @@ definitions:
       - description: Bearer
         properties:
           scheme:
-            enum: [bearer]
+            type: string
+            pattern: ^[Bb][Ee][Aa][Rr][Ee][Rr]$
 
       - description: Non Bearer
         not:
@@ -814,7 +815,8 @@ definitions:
         properties:
           scheme:
             not:
-              enum: [bearer]
+              type: string
+              pattern: ^[Bb][Ee][Aa][Rr][Ee][Rr]$
 
   OAuth2SecurityScheme:
     type: object
diff --git a/schemas/v3.1/schema.yaml b/schemas/v3.1/schema.yaml
index 39b90f34de..b09e617f29 100644
--- a/schemas/v3.1/schema.yaml
+++ b/schemas/v3.1/schema.yaml
@@ -765,7 +765,8 @@ $defs:
             type:
               const: http
             scheme:
-              const: bearer
+              type: string
+              pattern: ^[Bb][Ee][Aa][Rr][Ee][Rr]$
           required:
             - type
             - scheme
@@ -773,8 +774,6 @@ $defs:
           properties:
             bearerFormat:
               type: string
-          required:
-            - scheme
 
       type-oauth2:
         if: