diff --git a/build.gradle b/build.gradle
index 12fca768..9c97544e 100755
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,6 @@
  */
 
 plugins {
-  id 'me.champeau.jmh' version '0.6.8'
   id "com.github.spotbugs" version "5.0.13" apply false
   id 'com.netflix.nebula.dependency-recommender' version '12.0.0'
   id 'com.netflix.nebula.netflixoss' version '11.1.1'
@@ -28,7 +27,6 @@ ext {
 allprojects {
   apply plugin: 'com.netflix.nebula.dependency-recommender'
   apply plugin: 'com.netflix.nebula.netflixoss'
-  apply plugin: 'me.champeau.jmh'
 }
 
 subprojects {
@@ -68,20 +66,11 @@ subprojects {
 
   dependencies {
     api 'org.slf4j:slf4j-api'
-    api 'com.google.guava:guava'
+    implementation 'com.github.ben-manes.caffeine:caffeine:2.9.2'
     api 'com.netflix.spectator:spectator-api'
     testImplementation 'org.testng:testng:6.1.1'
     testImplementation 'org.slf4j:slf4j-log4j12'
     testImplementation 'log4j:log4j:1.2.17'
-    jmh 'org.slf4j:slf4j-simple'
-  }
-
-  jmh {
-    warmupIterations = 2
-    iterations = 10
-    fork = 5
-    profilers = ['STACK']
-    includes = ['.*']
   }
 
   checkstyle {
@@ -97,7 +86,6 @@ subprojects {
     ignoreFailures = false
     spotbugsMain.enabled = true
     spotbugsTest.enabled = false
-    spotbugsJmh.enabled = false
   }
   spotbugsMain {
     reports {
diff --git a/dependencies.properties b/dependencies.properties
index 39e8dffa..f17a1f95 100644
--- a/dependencies.properties
+++ b/dependencies.properties
@@ -6,7 +6,7 @@ com.fasterxml.jackson.core:jackson-annotations = 2.12.1
 com.fasterxml.jackson.core:jackson-core = 2.12.1
 com.fasterxml.jackson.core:jackson-databind = 2.12.1
 com.fasterxml.jackson.dataformat:jackson-dataformat-smile = 2.12.1
-com.google.guava:guava = 19.0
+com.google.guava:guava = 32.1.3-jre
 com.netflix.archaius:archaius2-api = 2.3.16
 com.netflix.archaius:archaius2-core = 2.3.16
 com.netflix.awsobjectmapper:awsobjectmapper = 1.11.965
diff --git a/servo-atlas/build.gradle b/servo-atlas/build.gradle
index 1c44a04d..b0a84352 100644
--- a/servo-atlas/build.gradle
+++ b/servo-atlas/build.gradle
@@ -8,7 +8,6 @@ dependencies {
   api 'io.netty:netty-buffer'
   api 'io.netty:netty-codec-http'
   api 'io.reactivex:rxjava'
-  jmh project(':servo-core')
 }
 
 jar {
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/AbstractContextualMonitor.java b/servo-core/src/main/java/com/netflix/servo/monitor/AbstractContextualMonitor.java
index 3960f57d..2cce05bd 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/AbstractContextualMonitor.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/AbstractContextualMonitor.java
@@ -15,7 +15,6 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.base.Function;
 import com.netflix.servo.tag.BasicTagList;
 import com.netflix.servo.tag.TagList;
 import com.netflix.servo.tag.TaggingContext;
@@ -24,6 +23,7 @@
 import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
+import java.util.function.Function;
 
 /**
  * Base class used to simplify creation of contextual monitors.
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/ContextualCounter.java b/servo-core/src/main/java/com/netflix/servo/monitor/ContextualCounter.java
index 22bc494f..ebecafeb 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/ContextualCounter.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/ContextualCounter.java
@@ -15,9 +15,10 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.base.Function;
 import com.netflix.servo.tag.TaggingContext;
 
+import java.util.function.Function;
+
 /**
  * Composite that maintains separate simple counters for each distinct set of tags returned by the
  * tagging context.
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/ContextualTimer.java b/servo-core/src/main/java/com/netflix/servo/monitor/ContextualTimer.java
index 8d17a3a2..c4e4092f 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/ContextualTimer.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/ContextualTimer.java
@@ -15,10 +15,10 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.base.Function;
 import com.netflix.servo.tag.TaggingContext;
 
 import java.util.concurrent.TimeUnit;
+import java.util.function.Function;
 
 /**
  * Composite that maintains separate simple timers for each distinct set of tags returned by the
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/DoubleGauge.java b/servo-core/src/main/java/com/netflix/servo/monitor/DoubleGauge.java
index 642ddc7c..0df98d37 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/DoubleGauge.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/DoubleGauge.java
@@ -15,11 +15,11 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.util.concurrent.AtomicDouble;
 import com.netflix.servo.SpectatorContext;
 import com.netflix.servo.annotations.DataSourceType;
 import com.netflix.servo.tag.TagList;
 import com.netflix.spectator.api.Id;
+import java.util.concurrent.atomic.AtomicReference;
 
 /**
  * A {@link Gauge} that reports a double value.
@@ -28,7 +28,7 @@ public class DoubleGauge extends AbstractMonitor<Double>
     implements Gauge<Double>, SpectatorMonitor {
 
   private final MonitorConfig baseConfig;
-  private final AtomicDouble number;
+  private final AtomicReference<Double> number;
   private final SpectatorContext.LazyGauge spectatorGauge;
 
   /**
@@ -39,7 +39,7 @@ public class DoubleGauge extends AbstractMonitor<Double>
   public DoubleGauge(MonitorConfig config) {
     super(config.withAdditionalTag(DataSourceType.GAUGE));
     baseConfig = config;
-    number = new AtomicDouble(0.0);
+    number = new AtomicReference<>(0.0);
     spectatorGauge = SpectatorContext.gauge(config);
   }
 
@@ -52,9 +52,9 @@ public void set(Double n) {
   }
 
   /**
-   * Returns a reference to the {@link com.google.common.util.concurrent.AtomicDouble}.
+   * Returns a reference to the {@link AtomicReference}.
    */
-  public AtomicDouble getNumber() {
+  public AtomicReference<Double> getNumber() {
     return number;
   }
 
@@ -92,7 +92,7 @@ public boolean equals(Object o) {
   @Override
   public int hashCode() {
     int result = config.hashCode();
-    final int n = Double.valueOf(number.get()).hashCode();
+    final int n = number.get().hashCode();
     result = 31 * result + n;
     return result;
   }
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/DynamicGauge.java b/servo-core/src/main/java/com/netflix/servo/monitor/DynamicGauge.java
index 931f0092..7b13a7fc 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/DynamicGauge.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/DynamicGauge.java
@@ -15,19 +15,15 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.base.Throwables;
-import com.google.common.cache.CacheBuilder;
-import com.google.common.cache.CacheLoader;
-import com.google.common.cache.LoadingCache;
-import com.google.common.collect.ImmutableList;
+import com.github.benmanes.caffeine.cache.Caffeine;
 import com.netflix.servo.DefaultMonitorRegistry;
+import com.github.benmanes.caffeine.cache.LoadingCache;
 import com.netflix.servo.tag.TagList;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import java.util.ArrayList;
+import java.util.Collections;
 
 import java.util.List;
 import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -36,7 +32,7 @@
  * Gauges are automatically expired after 15 minutes of inactivity.
  */
 public final class DynamicGauge implements CompositeMonitor<Long>, SpectatorMonitor {
-  private static final Logger LOGGER = LoggerFactory.getLogger(DynamicGauge.class);
+
   private static final String DEFAULT_EXPIRATION = "15";
   private static final String DEFAULT_EXPIRATION_UNIT = "MINUTES";
   private static final String CLASS_NAME = DynamicGauge.class.getCanonicalName();
@@ -49,7 +45,6 @@ public final class DynamicGauge implements CompositeMonitor<Long>, SpectatorMoni
   private static final DynamicGauge INSTANCE = new DynamicGauge();
 
   private final LoadingCache<MonitorConfig, DoubleGauge> gauges;
-  private final CompositeMonitor<?> cacheMonitor;
 
   private DynamicGauge() {
     final String expiration = System.getProperty(EXPIRATION_PROP, DEFAULT_EXPIRATION);
@@ -57,15 +52,10 @@ private DynamicGauge() {
     final long expirationValue = Long.parseLong(expiration);
     final TimeUnit expirationUnitValue = TimeUnit.valueOf(expirationUnit);
 
-    gauges = CacheBuilder.newBuilder()
+    gauges = Caffeine.newBuilder()
         .expireAfterAccess(expirationValue, expirationUnitValue)
-        .build(new CacheLoader<MonitorConfig, DoubleGauge>() {
-          @Override
-          public DoubleGauge load(final MonitorConfig config) throws Exception {
-            return new DoubleGauge(config);
-          }
-        });
-    cacheMonitor = Monitors.newCacheMonitor(CACHE_MONITOR_ID, gauges);
+        .build(DoubleGauge::new);
+    Monitors.newCacheMonitor(CACHE_MONITOR_ID, gauges);
     DefaultMonitorRegistry.getInstance().register(this);
   }
 
@@ -102,12 +92,7 @@ public static void set(String name, TagList list, double value) {
   }
 
   private DoubleGauge get(MonitorConfig config) {
-    try {
-      return gauges.get(config);
-    } catch (ExecutionException e) {
-      LOGGER.error("Failed to get a gauge for {}: {}", config, e.getMessage());
-      throw Throwables.propagate(e);
-    }
+    return gauges.get(config);
   }
 
   /**
@@ -116,7 +101,7 @@ private DoubleGauge get(MonitorConfig config) {
   @Override
   public List<Monitor<?>> getMonitors() {
     final ConcurrentMap<MonitorConfig, DoubleGauge> gaugesMap = gauges.asMap();
-    return ImmutableList.copyOf(gaugesMap.values());
+    return Collections.unmodifiableList(new ArrayList<>(gaugesMap.values()));
   }
 
   /**
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/MonitoredCache.java b/servo-core/src/main/java/com/netflix/servo/monitor/MonitoredCache.java
index fc2804f8..dacfef32 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/MonitoredCache.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/MonitoredCache.java
@@ -15,8 +15,8 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.cache.Cache;
-import com.google.common.cache.CacheStats;
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.stats.CacheStats;
 import com.netflix.servo.util.Memoizer;
 
 import java.util.concurrent.Callable;
@@ -65,11 +65,6 @@ long loadCount() {
     return memoStats.get().loadCount();
   }
 
-  @com.netflix.servo.annotations.Monitor(name = "loadExceptionCount", type = COUNTER)
-  long loadExceptionCount() {
-    return memoStats.get().loadExceptionCount();
-  }
-
   @com.netflix.servo.annotations.Monitor(name = "loadSuccessCount", type = COUNTER)
   long loadSuccessCount() {
     return memoStats.get().loadSuccessCount();
diff --git a/servo-core/src/main/java/com/netflix/servo/monitor/Monitors.java b/servo-core/src/main/java/com/netflix/servo/monitor/Monitors.java
index a7709f47..0d567f7b 100644
--- a/servo-core/src/main/java/com/netflix/servo/monitor/Monitors.java
+++ b/servo-core/src/main/java/com/netflix/servo/monitor/Monitors.java
@@ -15,8 +15,7 @@
  */
 package com.netflix.servo.monitor;
 
-import com.google.common.base.Function;
-import com.google.common.cache.Cache;
+import com.github.benmanes.caffeine.cache.Cache;
 import com.netflix.servo.DefaultMonitorRegistry;
 import com.netflix.servo.annotations.DataSourceType;
 import com.netflix.servo.annotations.MonitorTags;
@@ -33,6 +32,7 @@
 import java.util.Set;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Function;
 
 import static com.netflix.servo.util.Reflection.getFieldsAnnotatedBy;
 import static com.netflix.servo.util.Reflection.getMethodsAnnotatedBy;
diff --git a/servo-core/src/main/java/com/netflix/servo/publish/MetricTransformObserver.java b/servo-core/src/main/java/com/netflix/servo/publish/MetricTransformObserver.java
index eaee0572..6881badb 100644
--- a/servo-core/src/main/java/com/netflix/servo/publish/MetricTransformObserver.java
+++ b/servo-core/src/main/java/com/netflix/servo/publish/MetricTransformObserver.java
@@ -15,10 +15,10 @@
  */
 package com.netflix.servo.publish;
 
-import com.google.common.base.Function;
 import com.netflix.servo.Metric;
 
 import java.util.List;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 /**
diff --git a/servo-core/src/main/java/com/netflix/servo/tag/Tags.java b/servo-core/src/main/java/com/netflix/servo/tag/Tags.java
index 17f2ecd7..e6a4a4f1 100644
--- a/servo-core/src/main/java/com/netflix/servo/tag/Tags.java
+++ b/servo-core/src/main/java/com/netflix/servo/tag/Tags.java
@@ -15,37 +15,10 @@
  */
 package com.netflix.servo.tag;
 
-import com.google.common.collect.Interner;
-import com.google.common.collect.Interners;
-
 /**
  * Helper functions for working with tags and tag lists.
  */
 public final class Tags {
-  /**
-   * Keep track of the strings that have been used for keys and values.
-   */
-  private static final Interner<String> STR_CACHE = Interners.newWeakInterner();
-
-  /**
-   * Keep track of tags that have been seen before and reuse.
-   */
-  private static final Interner<Tag> TAG_CACHE = Interners.newWeakInterner();
-
-  /**
-   * Intern strings used for tag keys or values.
-   */
-  public static String intern(String v) {
-    return STR_CACHE.intern(v);
-  }
-
-  /**
-   * Returns the canonical representation of a tag.
-   */
-  public static Tag intern(Tag t) {
-    return TAG_CACHE.intern(t);
-  }
-
   /**
    * Interns custom tag types, assumes that basic tags are already interned. This is used to
    * ensure that we have a common view of tags internally. In particular, different subclasses of
@@ -60,8 +33,7 @@ static Tag internCustom(Tag t) {
    * Create a new tag instance.
    */
   public static Tag newTag(String key, String value) {
-    Tag newTag = new BasicTag(intern(key), intern(value));
-    return intern(newTag);
+    return new BasicTag(key, value);
   }
 
   /**
diff --git a/servo-example/build.gradle b/servo-example/build.gradle
index bed109cb..015f6f82 100644
--- a/servo-example/build.gradle
+++ b/servo-example/build.gradle
@@ -2,6 +2,7 @@ dependencies {
   api project(':servo-core')
   api project(':servo-atlas')
   api project(':servo-graphite')
+  api "com.google.guava:guava:32.1.3-jre"
 }
 
 task(run, dependsOn: 'classes', type: JavaExec) {