diff --git a/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java b/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java
index dd25029229..a6d77b3683 100644
--- a/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java
+++ b/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java
@@ -111,9 +111,9 @@ import org.springframework.security.oauth2.jwt.ReactiveJwtDecoderFactory;
 import org.springframework.security.oauth2.server.resource.authentication.JwtReactiveAuthenticationManager;
 import org.springframework.security.oauth2.server.resource.authentication.OpaqueTokenReactiveAuthenticationManager;
 import org.springframework.security.oauth2.server.resource.authentication.ReactiveJwtAuthenticationConverter;
-import org.springframework.security.oauth2.server.resource.introspection.NimbusReactiveOpaqueTokenIntrospector;
 import org.springframework.security.oauth2.server.resource.introspection.ReactiveOpaqueTokenAuthenticationConverter;
 import org.springframework.security.oauth2.server.resource.introspection.ReactiveOpaqueTokenIntrospector;
+import org.springframework.security.oauth2.server.resource.introspection.SpringReactiveOpaqueTokenIntrospector;
 import org.springframework.security.oauth2.server.resource.web.access.server.BearerTokenServerAccessDeniedHandler;
 import org.springframework.security.oauth2.server.resource.web.server.BearerTokenServerAuthenticationEntryPoint;
 import org.springframework.security.oauth2.server.resource.web.server.authentication.ServerBearerTokenAuthenticationConverter;
@@ -5443,7 +5443,7 @@ public class ServerHttpSecurity {
 			public OpaqueTokenSpec introspectionUri(String introspectionUri) {
 				Assert.hasText(introspectionUri, "introspectionUri cannot be empty");
 				this.introspectionUri = introspectionUri;
-				this.introspector = () -> new NimbusReactiveOpaqueTokenIntrospector(this.introspectionUri,
+				this.introspector = () -> new SpringReactiveOpaqueTokenIntrospector(this.introspectionUri,
 						this.clientId, this.clientSecret);
 				return this;
 			}
@@ -5459,7 +5459,7 @@ public class ServerHttpSecurity {
 				Assert.notNull(clientSecret, "clientSecret cannot be null");
 				this.clientId = clientId;
 				this.clientSecret = clientSecret;
-				this.introspector = () -> new NimbusReactiveOpaqueTokenIntrospector(this.introspectionUri,
+				this.introspector = () -> new SpringReactiveOpaqueTokenIntrospector(this.introspectionUri,
 						this.clientId, this.clientSecret);
 				return this;
 			}