diff --git a/spring-boot-modules/spring-boot-libraries/pom.xml b/spring-boot-modules/spring-boot-libraries/pom.xml
index ed9a414a60..b0f0c780aa 100644
--- a/spring-boot-modules/spring-boot-libraries/pom.xml
+++ b/spring-boot-modules/spring-boot-libraries/pom.xml
@@ -18,6 +18,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-security</artifactId>
@@ -95,7 +99,7 @@
         </dependency>
         <!-- Bucket4j -->
         <dependency>
-            <groupId>com.github.vladimir-bukhtoyarov</groupId>
+            <groupId>com.bucket4j</groupId>
             <artifactId>bucket4j-core</artifactId>
             <version>${bucket4j.version}</version>
         </dependency>
@@ -226,8 +230,8 @@
         <barcode4j.version>2.1</barcode4j.version>
         <qrgen.version>2.6.0</qrgen.version>
         <zxing.version>3.3.0</zxing.version>
-        <bucket4j.version>7.6.0</bucket4j.version>
-        <bucket4j-spring-boot-starter.version>0.7.0</bucket4j-spring-boot-starter.version>
+        <bucket4j.version>8.1.0</bucket4j.version>
+        <bucket4j-spring-boot-starter.version>0.8.1</bucket4j-spring-boot-starter.version>
         <caffeine.version>3.1.8</caffeine.version>
     </properties>
 
diff --git a/spring-boot-modules/spring-boot-libraries/src/main/resources/ratelimiting/application-bucket4j-starter.yml b/spring-boot-modules/spring-boot-libraries/src/main/resources/ratelimiting/application-bucket4j-starter.yml
index ecc9f22e0a..efff65555b 100644
--- a/spring-boot-modules/spring-boot-libraries/src/main/resources/ratelimiting/application-bucket4j-starter.yml
+++ b/spring-boot-modules/spring-boot-libraries/src/main/resources/ratelimiting/application-bucket4j-starter.yml
@@ -21,19 +21,19 @@ bucket4j:
     url: /api/v1/area.*
     http-response-body: "{ \"status\": 429, \"error\": \"Too Many Requests\", \"message\": \"You have exhausted your API Request Quota\" }"
     rate-limits:
-    - expression: "getHeader('X-api-key')"
+    - cache-key: "getHeader('X-api-key')"
       execute-condition: "getHeader('X-api-key').startsWith('PX001-')"
       bandwidths:
       - capacity: 100
         time: 1
         unit: hours
-    - expression: "getHeader('X-api-key')"
+    - cache-key: "getHeader('X-api-key')"
       execute-condition: "getHeader('X-api-key').startsWith('BX001-')"
       bandwidths:
       - capacity: 40
         time: 1
         unit: hours
-    - expression: "getHeader('X-api-key')"
+    - cache-key: "getHeader('X-api-key')"
       bandwidths:
       - capacity: 20
         time: 1