diff --git a/back/build.gradle.kts b/back/build.gradle.kts
index 8f5cd7bd..7a9978ce 100644
--- a/back/build.gradle.kts
+++ b/back/build.gradle.kts
@@ -67,6 +67,9 @@ dependencies {
 	implementation ("org.springframework.kafka:spring-kafka")
 
 	runtimeOnly("com.mysql:mysql-connector-j")
+
+	// Sentry
+	implementation("io.sentry:sentry-spring-boot-starter-jakarta:8.19.1")
 }
 
 tasks.withType<Test> {
diff --git a/back/src/main/java/com/back/global/security/CustomAuthenticationFilter.java b/back/src/main/java/com/back/global/security/CustomAuthenticationFilter.java
index 73b83ad8..08798b8b 100644
--- a/back/src/main/java/com/back/global/security/CustomAuthenticationFilter.java
+++ b/back/src/main/java/com/back/global/security/CustomAuthenticationFilter.java
@@ -6,6 +6,7 @@
 import com.back.global.rq.Rq;
 import com.back.global.rsData.RsData;
 import com.back.standard.util.Ut;
+import io.sentry.Sentry;
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
@@ -14,6 +15,7 @@
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
+import org.springframework.security.core.AuthenticationException;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.stereotype.Component;
@@ -36,8 +38,9 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
 
         try {
             work(request, response, filterChain);
-        } catch (Exception e) {
+        } catch (AuthenticationException e) {
             log.error("CustomAuthenticationFilter에서 예외 발생: ",e); //401 에러로 빠지는거 추적 가능
+            Sentry.captureException(e);
             RsData<Void> rsData = new RsData<>("401-1", "인증 오류가 발생했습니다.");
             response.setContentType("application/json;charset=UTF-8");
             response.setStatus(rsData.statusCode());
diff --git a/back/src/main/resources/application.yml b/back/src/main/resources/application.yml
index 9109e957..d4c25cf4 100644
--- a/back/src/main/resources/application.yml
+++ b/back/src/main/resources/application.yml
@@ -2,6 +2,12 @@ server:
   port: 8080
   forward-headers-strategy: native
 
+sentry:
+  dsn: https://2c0d2da223ce1abb9fa4ed3faaf01955@o4510117752471552.ingest.us.sentry.io/4510118514589696
+  traces-sample-rate: 1.0
+  send-default-pii: true
+
+
 spring:
   application:
     name: back