diff --git a/auth-center/src/main/resources/application.yml b/auth-center/src/main/resources/application.yml
index b2daebe3..d73d0ece 100644
--- a/auth-center/src/main/resources/application.yml
+++ b/auth-center/src/main/resources/application.yml
@@ -14,6 +14,9 @@ spring:
   jackson:
     date-format: yyyy-MM-dd HH:mm:ss
     time-zone: Asia/Hong_Kong
+  sleuth:
+    sampler:
+      probability: 1.0
   servlet:
     multipart:
       # `location` specifies the directory where uploaded files will be stored. When not specified,
diff --git a/exercise-mis/src/main/resources/application.yml b/exercise-mis/src/main/resources/application.yml
index e548b208..922dff18 100644
--- a/exercise-mis/src/main/resources/application.yml
+++ b/exercise-mis/src/main/resources/application.yml
@@ -16,6 +16,9 @@ spring:
   jackson:
     date-format: yyyy-MM-dd HH:mm:ss
     time-zone: Asia/Hong_Kong
+  sleuth:
+    sampler:
+      probability: 1.0
   servlet:
     multipart:
       # `location` specifies the directory where uploaded files will be stored. When not specified,
diff --git a/muscle-mis/src/main/resources/application.yml b/muscle-mis/src/main/resources/application.yml
index c3ed4d05..ca19b3d9 100644
--- a/muscle-mis/src/main/resources/application.yml
+++ b/muscle-mis/src/main/resources/application.yml
@@ -16,6 +16,9 @@ spring:
   jackson:
     date-format: yyyy-MM-dd HH:mm:ss
     time-zone: Asia/Hong_Kong
+  sleuth:
+    sampler:
+      probability: 1.0
   cloud:
     consul:
       discovery:
diff --git a/reactive-spring-cloud-starter/pom.xml b/reactive-spring-cloud-starter/pom.xml
index bfbfd299..320305cb 100644
--- a/reactive-spring-cloud-starter/pom.xml
+++ b/reactive-spring-cloud-starter/pom.xml
@@ -64,6 +64,10 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-consul-all</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-sleuth</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-sleuth-zipkin</artifactId>
diff --git a/spring-boot-admin/src/main/resources/application.yml b/spring-boot-admin/src/main/resources/application.yml
index 5b6ebd51..e3b30eb2 100644
--- a/spring-boot-admin/src/main/resources/application.yml
+++ b/spring-boot-admin/src/main/resources/application.yml
@@ -21,6 +21,9 @@ spring:
   jackson:
     date-format: yyyy-MM-dd HH:mm:ss
     time-zone: Asia/Hong_Kong
+  sleuth:
+    sampler:
+      probability: 1.0
   cloud:
     consul:
       discovery:
diff --git a/spring-cloud-starter/pom.xml b/spring-cloud-starter/pom.xml
index ff813f85..37a5d27f 100644
--- a/spring-cloud-starter/pom.xml
+++ b/spring-cloud-starter/pom.xml
@@ -69,6 +69,10 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-openfeign</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-sleuth</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-sleuth-zipkin</artifactId>