diff --git a/modules/openapi-generator/src/main/resources/ruby-client/README.mustache b/modules/openapi-generator/src/main/resources/ruby-client/README.mustache
index 68f2310f9a6..0445ee3d959 100644
--- a/modules/openapi-generator/src/main/resources/ruby-client/README.mustache
+++ b/modules/openapi-generator/src/main/resources/ruby-client/README.mustache
@@ -70,13 +70,17 @@ require '{{{gemName}}}'
   config.username = 'YOUR_USERNAME'
   config.password = 'YOUR_PASSWORD'{{/isBasicBasic}}{{#isBasicBearer}}
   # Configure Bearer authorization{{#bearerFormat}} ({{{.}}}){{/bearerFormat}}: {{{name}}}
-  config.access_token = 'YOUR_BEARER_TOKEN'{{/isBasicBearer}}{{/isBasic}}{{#isApiKey}}
+  config.access_token = 'YOUR_BEARER_TOKEN'
+  # Configure a proc to get access tokens in lieu of the static access_token configuration
+  config.access_token_getter = -> { 'YOUR TOKEN GETTER PROC' } {{/isBasicBearer}}{{/isBasic}}{{#isApiKey}}
   # Configure API key authorization: {{{name}}}
   config.api_key['{{{name}}}'] = 'YOUR API KEY'
   # Uncomment the following line to set a prefix for the API key, e.g. 'Bearer' (defaults to nil)
   # config.api_key_prefix['{{{name}}}'] = 'Bearer'{{/isApiKey}}{{#isOAuth}}
   # Configure OAuth2 access token for authorization: {{{name}}}
-  config.access_token = 'YOUR ACCESS TOKEN'{{/isOAuth}}
+  config.access_token = 'YOUR ACCESS TOKEN'
+  # Configure a proc to get access tokens in lieu of the static access_token configuration
+  config.access_token_getter = -> { 'YOUR TOKEN GETTER PROC' } {{/isOAuth}}
 {{/authMethods}}end
 {{/hasAuthMethods}}
 
diff --git a/modules/openapi-generator/src/main/resources/ruby-client/configuration.mustache b/modules/openapi-generator/src/main/resources/ruby-client/configuration.mustache
index 8f7856537ba..5439dd2fa80 100644
--- a/modules/openapi-generator/src/main/resources/ruby-client/configuration.mustache
+++ b/modules/openapi-generator/src/main/resources/ruby-client/configuration.mustache
@@ -54,6 +54,11 @@ module {{moduleName}}
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -178,6 +183,12 @@ module {{moduleName}}
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
@@ -215,7 +226,7 @@ module {{moduleName}}
             format: '{{{.}}}',
             {{/bearerFormat}}
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
 {{/isBasicBearer}}
 {{/isBasic}}
@@ -225,7 +236,7 @@ module {{moduleName}}
             type: 'oauth2',
             in: 'header',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
 {{/isOAuth}}
 {{/authMethods}}
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/configuration.rb b/samples/client/petstore/ruby-autoload/lib/petstore/configuration.rb
index 8be0b1c1443..638a965e7f8 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/configuration.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/configuration.rb
@@ -62,6 +62,11 @@ module Petstore
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -208,6 +213,12 @@ module Petstore
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
@@ -236,7 +247,7 @@ module Petstore
             in: 'header',
             format: 'JWT',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
         'http_basic_test' =>
           {
@@ -250,7 +261,7 @@ module Petstore
             type: 'oauth2',
             in: 'header',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
       }
     end
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/configuration.rb b/samples/client/petstore/ruby-faraday/lib/petstore/configuration.rb
index 9b0335af3d8..12826b5b743 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/configuration.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/configuration.rb
@@ -62,6 +62,11 @@ module Petstore
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -211,6 +216,12 @@ module Petstore
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
@@ -239,7 +250,7 @@ module Petstore
             in: 'header',
             format: 'JWT',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
         'http_basic_test' =>
           {
@@ -253,7 +264,7 @@ module Petstore
             type: 'oauth2',
             in: 'header',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
       }
     end
diff --git a/samples/client/petstore/ruby/lib/petstore/configuration.rb b/samples/client/petstore/ruby/lib/petstore/configuration.rb
index 8be0b1c1443..638a965e7f8 100644
--- a/samples/client/petstore/ruby/lib/petstore/configuration.rb
+++ b/samples/client/petstore/ruby/lib/petstore/configuration.rb
@@ -62,6 +62,11 @@ module Petstore
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -208,6 +213,12 @@ module Petstore
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
@@ -236,7 +247,7 @@ module Petstore
             in: 'header',
             format: 'JWT',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
         'http_basic_test' =>
           {
@@ -250,7 +261,7 @@ module Petstore
             type: 'oauth2',
             in: 'header',
             key: 'Authorization',
-            value: "Bearer #{access_token}"
+            value: "Bearer #{access_token_with_refresh}"
           },
       }
     end
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/ruby-client/lib/x_auth_id_alias/configuration.rb b/samples/openapi3/client/extensions/x-auth-id-alias/ruby-client/lib/x_auth_id_alias/configuration.rb
index c3907f64975..74beb58c83a 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/ruby-client/lib/x_auth_id_alias/configuration.rb
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/ruby-client/lib/x_auth_id_alias/configuration.rb
@@ -62,6 +62,11 @@ module XAuthIDAlias
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -208,6 +213,12 @@ module XAuthIDAlias
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
diff --git a/samples/openapi3/client/features/dynamic-servers/ruby/lib/dynamic_servers/configuration.rb b/samples/openapi3/client/features/dynamic-servers/ruby/lib/dynamic_servers/configuration.rb
index 5426d2b6c20..f1bf1626270 100644
--- a/samples/openapi3/client/features/dynamic-servers/ruby/lib/dynamic_servers/configuration.rb
+++ b/samples/openapi3/client/features/dynamic-servers/ruby/lib/dynamic_servers/configuration.rb
@@ -62,6 +62,11 @@ module DynamicServers
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -208,6 +213,12 @@ module DynamicServers
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")
diff --git a/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/configuration.rb b/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/configuration.rb
index 2b159c0332b..802f2d50f32 100644
--- a/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/configuration.rb
+++ b/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/configuration.rb
@@ -62,6 +62,11 @@ module Petstore
     # Defines the access token (Bearer) used with OAuth2.
     attr_accessor :access_token
 
+    # Defines a Proc used to fetch or refresh access tokens (Bearer) used with OAuth2.
+    # Overrides the access_token if set
+    # @return [Proc]
+    attr_accessor :access_token_getter
+
     # Set this to enable/disable debugging. When enabled (set to true), HTTP request/response
     # details will be logged with `logger.debug` (see the `logger` attribute).
     # Default to false.
@@ -208,6 +213,12 @@ module Petstore
       end
     end
 
+    # Gets access_token using access_token_getter or uses the static access_token
+    def access_token_with_refresh
+        return access_token if access_token_getter.nil?
+        access_token_getter.call
+    end
+
     # Gets Basic Auth token string
     def basic_auth_token
       'Basic ' + ["#{username}:#{password}"].pack('m').delete("\r\n")