diff --git a/rosco-core/rosco-core.gradle b/rosco-core/rosco-core.gradle
index 8df286d943..d8e5e6c536 100644
--- a/rosco-core/rosco-core.gradle
+++ b/rosco-core/rosco-core.gradle
@@ -11,7 +11,7 @@ dependencies {
   implementation "io.spinnaker.kork:kork-web"
   implementation "com.squareup.retrofit2:converter-jackson"
   implementation "com.squareup.retrofit2:retrofit"
-  implementation "io.reactivex:rxjava"
+  implementation "io.reactivex.rxjava3:rxjava"
   implementation "org.apache.commons:commons-exec"
   implementation "org.apache.groovy:groovy"
   implementation "org.springframework.boot:spring-boot-starter-web"
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/executor/BakePoller.groovy b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/executor/BakePoller.groovy
index 446f8aec15..7eb8369d01 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/executor/BakePoller.groovy
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/executor/BakePoller.groovy
@@ -31,8 +31,9 @@ import org.springframework.beans.factory.annotation.Value
 import org.springframework.context.ApplicationListener
 import org.springframework.context.event.ContextRefreshedEvent
 import org.springframework.stereotype.Component
-import rx.functions.Action0
-import rx.schedulers.Schedulers
+import io.reactivex.rxjava3.functions.Action
+import io.reactivex.rxjava3.schedulers.Schedulers
+import io.reactivex.rxjava3.core.Observable
 
 import java.util.concurrent.TimeUnit
 
@@ -79,7 +80,7 @@ class BakePoller implements ApplicationListener<ContextRefreshedEvent> {
     Schedulers.io().createWorker().schedulePeriodically(
       {
         try {
-          rx.Observable.from(bakeStore.thisInstanceIncompleteBakeIds)
+          Observable.fromIterable(bakeStore.thisInstanceIncompleteBakeIds)
             .subscribe(
               { String incompleteBakeId ->
                 try {
@@ -91,19 +92,19 @@ class BakePoller implements ApplicationListener<ContextRefreshedEvent> {
               {
                 log.error("Update Error: ${it.message}")
               },
-              {} as Action0
+              {} as Action
             )
         } catch (Exception e) {
           log.error("Update Polling Error:", e)
         }
-      } as Action0, 0, pollingIntervalSeconds, TimeUnit.SECONDS
+      } as Runnable, 0, pollingIntervalSeconds, TimeUnit.SECONDS
     )
 
     // Check _all_ rosco instances' incomplete bakes for staleness.
     Schedulers.io().createWorker().schedulePeriodically(
       {
         try {
-          rx.Observable.from(bakeStore.allIncompleteBakeIds.entrySet())
+          Observable.fromIterable(bakeStore.allIncompleteBakeIds.entrySet())
             .subscribe(
               { Map.Entry<String, Set<String>> entry ->
                 String roscoInstanceId = entry.key
@@ -111,7 +112,7 @@ class BakePoller implements ApplicationListener<ContextRefreshedEvent> {
 
                 if (roscoInstanceId != this.roscoInstanceId) {
                   try {
-                    rx.Observable.from(incompleteBakeIds)
+                    Observable.fromIterable(incompleteBakeIds)
                       .subscribe(
                         { String statusId ->
                           BakeStatus bakeStatus = bakeStore.retrieveBakeStatusById(statusId)
@@ -148,7 +149,7 @@ class BakePoller implements ApplicationListener<ContextRefreshedEvent> {
                         {
                           log.error("Error: ${it.message}")
                         },
-                        {} as Action0
+                        {} as Action
                     )
                   } catch (Exception e) {
                     log.error("Zombie Killer Polling Error:", e)
@@ -158,12 +159,12 @@ class BakePoller implements ApplicationListener<ContextRefreshedEvent> {
               {
                 log.error("Zombie Killer Error: ${it.message}")
               },
-              {} as Action0
+              {} as Action
             )
         } catch (Exception e) {
           log.error("Zombie Killer Polling Error:", e)
         }
-      } as Action0, 0, orphanedJobPollingIntervalSeconds, TimeUnit.SECONDS
+      } as Runnable, 0, orphanedJobPollingIntervalSeconds, TimeUnit.SECONDS
     )
   }
 
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/jobs/local/JobExecutorLocal.groovy b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/jobs/local/JobExecutorLocal.groovy
index 3450b322fe..8692d649b4 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/jobs/local/JobExecutorLocal.groovy
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/jobs/local/JobExecutorLocal.groovy
@@ -30,11 +30,9 @@ import org.apache.commons.exec.PumpStreamHandler
 import org.apache.commons.exec.Watchdog
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.beans.factory.annotation.Value
-import rx.Scheduler
-import rx.functions.Action0
-import rx.schedulers.Schedulers
-
-import javax.annotation.PostConstruct
+import io.reactivex.rxjava3.schedulers.Schedulers
+import io.reactivex.rxjava3.core.Scheduler
+import jakarta.annotation.PostConstruct
 import java.util.concurrent.ConcurrentHashMap
 import java.util.function.ToDoubleFunction
 
@@ -56,9 +54,9 @@ class JobExecutorLocal implements JobExecutor {
     String jobId = jobRequest.jobId
 
     scheduler.createWorker().schedule(
-      new Action0() {
+      new Runnable() {
         @Override
-        public void call() {
+        void run() {
           PumpStreamHandler pumpStreamHandler
           ByteArrayOutputStream stdOut
           ByteArrayOutputStream stdErr
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/alicloud/config/RoscoAliCloudConfiguration.java b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/alicloud/config/RoscoAliCloudConfiguration.java
index f902907a68..e33340ef82 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/alicloud/config/RoscoAliCloudConfiguration.java
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/alicloud/config/RoscoAliCloudConfiguration.java
@@ -20,9 +20,9 @@
 import com.netflix.spinnaker.rosco.api.BakeRequest;
 import com.netflix.spinnaker.rosco.providers.alicloud.AliCloudBakeHandler;
 import com.netflix.spinnaker.rosco.providers.registry.CloudProviderBakeHandlerRegistry;
+import jakarta.annotation.PostConstruct;
 import java.util.ArrayList;
 import java.util.List;
-import javax.annotation.PostConstruct;
 import lombok.Data;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/aws/config/RoscoAWSConfiguration.groovy b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/aws/config/RoscoAWSConfiguration.groovy
index 9a67044d1b..4b897aea85 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/aws/config/RoscoAWSConfiguration.groovy
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/aws/config/RoscoAWSConfiguration.groovy
@@ -30,7 +30,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.ComponentScan
 import org.springframework.context.annotation.Configuration
 
-import javax.annotation.PostConstruct
+import jakarta.annotation.PostConstruct
 
 @Configuration
 @ConditionalOnProperty('aws.enabled')
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/azure/config/RoscoAzureConfiguration.groovy b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/azure/config/RoscoAzureConfiguration.groovy
index c1e9a7f1c8..651eaa6e9b 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/azure/config/RoscoAzureConfiguration.groovy
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/azure/config/RoscoAzureConfiguration.groovy
@@ -27,7 +27,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.ComponentScan
 import org.springframework.context.annotation.Configuration
 
-import javax.annotation.PostConstruct
+import jakarta.annotation.PostConstruct
 
 @Configuration
 @ConditionalOnProperty('azure.enabled')
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/docker/config/RoscoDockerConfiguration.groovy b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/docker/config/RoscoDockerConfiguration.groovy
index 6f77be9327..4ee2a7c1f5 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/docker/config/RoscoDockerConfiguration.groovy
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/docker/config/RoscoDockerConfiguration.groovy
@@ -29,7 +29,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.ComponentScan
 import org.springframework.context.annotation.Configuration
 
-import javax.annotation.PostConstruct
+import jakarta.annotation.PostConstruct
 
 @Configuration
 @ConditionalOnProperty('docker.enabled')
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/google/config/RoscoGoogleConfiguration.groovy b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/google/config/RoscoGoogleConfiguration.groovy
index 004888a6ff..47ec769e43 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/google/config/RoscoGoogleConfiguration.groovy
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/google/config/RoscoGoogleConfiguration.groovy
@@ -30,7 +30,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.ComponentScan
 import org.springframework.context.annotation.Configuration
 
-import javax.annotation.PostConstruct
+import jakarta.annotation.PostConstruct
 
 @Configuration
 @ConditionalOnProperty('google.enabled')
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/huaweicloud/config/RoscoHuaweiCloudConfiguration.java b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/huaweicloud/config/RoscoHuaweiCloudConfiguration.java
index c35685962c..ed6f9a8212 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/huaweicloud/config/RoscoHuaweiCloudConfiguration.java
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/huaweicloud/config/RoscoHuaweiCloudConfiguration.java
@@ -20,9 +20,9 @@
 import com.netflix.spinnaker.rosco.api.BakeRequest;
 import com.netflix.spinnaker.rosco.providers.huaweicloud.HuaweiCloudBakeHandler;
 import com.netflix.spinnaker.rosco.providers.registry.CloudProviderBakeHandlerRegistry;
+import jakarta.annotation.PostConstruct;
 import java.util.ArrayList;
 import java.util.List;
-import javax.annotation.PostConstruct;
 import lombok.Data;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/oracle/config/RoscoOracleConfiguration.java b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/oracle/config/RoscoOracleConfiguration.java
index 7f92f870e7..dec85d3c88 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/oracle/config/RoscoOracleConfiguration.java
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/oracle/config/RoscoOracleConfiguration.java
@@ -12,7 +12,7 @@
 import com.netflix.spinnaker.rosco.api.BakeRequest;
 import com.netflix.spinnaker.rosco.providers.oracle.OCIBakeHandler;
 import com.netflix.spinnaker.rosco.providers.registry.CloudProviderBakeHandlerRegistry;
-import javax.annotation.PostConstruct;
+import jakarta.annotation.PostConstruct;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.ComponentScan;
diff --git a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/tencentcloud/config/RoscoTencentCloudConfiguration.java b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/tencentcloud/config/RoscoTencentCloudConfiguration.java
index e9b37f7ec3..661dd65934 100644
--- a/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/tencentcloud/config/RoscoTencentCloudConfiguration.java
+++ b/rosco-core/src/main/groovy/com/netflix/spinnaker/rosco/providers/tencentcloud/config/RoscoTencentCloudConfiguration.java
@@ -20,9 +20,9 @@
 import com.netflix.spinnaker.rosco.api.BakeRequest.CloudProviderType;
 import com.netflix.spinnaker.rosco.providers.registry.CloudProviderBakeHandlerRegistry;
 import com.netflix.spinnaker.rosco.providers.tencentcloud.TencentCloudBakeHandler;
+import jakarta.annotation.PostConstruct;
 import java.util.ArrayList;
 import java.util.List;
-import javax.annotation.PostConstruct;
 import lombok.Data;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
diff --git a/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/BakeManifestRequest.java b/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/BakeManifestRequest.java
index 783569bfea..45c3910754 100644
--- a/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/BakeManifestRequest.java
+++ b/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/BakeManifestRequest.java
@@ -1,8 +1,8 @@
 package com.netflix.spinnaker.rosco.manifests;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
+import jakarta.annotation.Nullable;
 import java.util.Map;
-import javax.annotation.Nullable;
 import lombok.Data;
 
 @Data
diff --git a/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/helm/HelmBakeManifestRequest.java b/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/helm/HelmBakeManifestRequest.java
index 0e874f9014..1156d4ce1e 100644
--- a/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/helm/HelmBakeManifestRequest.java
+++ b/rosco-manifests/src/main/java/com/netflix/spinnaker/rosco/manifests/helm/HelmBakeManifestRequest.java
@@ -2,8 +2,8 @@
 
 import com.netflix.spinnaker.kork.artifacts.model.Artifact;
 import com.netflix.spinnaker.rosco.manifests.BakeManifestRequest;
+import jakarta.annotation.Nullable;
 import java.util.List;
-import javax.annotation.Nullable;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 
diff --git a/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/Main.groovy b/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/Main.groovy
index 2cfa29a03f..1b3fa3cf5a 100644
--- a/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/Main.groovy
+++ b/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/Main.groovy
@@ -50,7 +50,7 @@ import org.springframework.scheduling.annotation.EnableScheduling
 import org.springframework.web.filter.ShallowEtagHeaderFilter
 import com.netflix.spinnaker.kork.boot.DefaultPropertiesBuilder
 
-import javax.servlet.Filter
+import jakarta.servlet.Filter
 
 @Configuration
 @ComponentScan([
diff --git a/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/WebConfig.groovy b/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/WebConfig.groovy
index 534b98b2e0..1636373fa1 100644
--- a/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/WebConfig.groovy
+++ b/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/WebConfig.groovy
@@ -1,4 +1,4 @@
-/*
+  /*
  * Copyright 2016 Google, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License")
@@ -26,11 +26,11 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
 import org.springframework.core.Ordered
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer
 
 @Configuration
 @CompileStatic
-public class WebConfig extends WebMvcConfigurerAdapter {
+public class WebConfig implements WebMvcConfigurer {
 
   @Autowired
   Registry registry
diff --git a/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/filters/SimpleCORSFilter.groovy b/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/filters/SimpleCORSFilter.groovy
index 67d006db46..e0fd67ba09 100644
--- a/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/filters/SimpleCORSFilter.groovy
+++ b/rosco-web/src/main/groovy/com/netflix/spinnaker/rosco/filters/SimpleCORSFilter.groovy
@@ -18,8 +18,8 @@ package com.netflix.spinnaker.rosco.filters
 
 import org.springframework.stereotype.Component
 
-import javax.servlet.*
-import javax.servlet.http.HttpServletResponse
+import jakarta.servlet.*
+import jakarta.servlet.http.HttpServletResponse
 
 @Component
 public class SimpleCORSFilter implements Filter {