diff --git a/test_helpers/src/main/java/com/google/errorprone/CompilationTestHelper.java b/test_helpers/src/main/java/com/google/errorprone/CompilationTestHelper.java
index 6a163747a1f..c8e706aae16 100644
--- a/test_helpers/src/main/java/com/google/errorprone/CompilationTestHelper.java
+++ b/test_helpers/src/main/java/com/google/errorprone/CompilationTestHelper.java
@@ -28,7 +28,6 @@
 import static org.junit.Assert.fail;
 
 import com.google.common.base.Joiner;
-import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableList;
 import com.google.common.io.ByteStreams;
 import com.google.errorprone.DiagnosticTestHelper.LookForCheckNameInDiagnostic;
@@ -52,6 +51,7 @@
 import java.util.List;
 import java.util.Locale;
 import java.util.Optional;
+import java.util.function.Predicate;
 import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
 import javax.annotation.Nullable;
diff --git a/test_helpers/src/main/java/com/google/errorprone/DiagnosticTestHelper.java b/test_helpers/src/main/java/com/google/errorprone/DiagnosticTestHelper.java
index e640ec6877a..f79e9ae44db 100644
--- a/test_helpers/src/main/java/com/google/errorprone/DiagnosticTestHelper.java
+++ b/test_helpers/src/main/java/com/google/errorprone/DiagnosticTestHelper.java
@@ -23,7 +23,6 @@
 import static org.hamcrest.Matchers.hasItem;
 import static org.junit.Assert.fail;
 
-import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Sets;
 import com.google.common.io.CharSource;
@@ -38,6 +37,7 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
+import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import javax.tools.Diagnostic;
 import javax.tools.DiagnosticListener;
@@ -195,7 +195,7 @@ public boolean matchesSafely(
           return false;
         }
 
-        if (!matcher.apply(item.getMessage(Locale.getDefault()))) {
+        if (!matcher.test(item.getMessage(Locale.getDefault()))) {
           mismatchDescription.appendText("diagnostic does not match ").appendValue(matcher);
           return false;
         }
@@ -400,7 +400,7 @@ private static class SimpleStringContains implements Predicate<String> {
     }
 
     @Override
-    public boolean apply(String input) {
+    public boolean test(String input) {
       return input.contains(pattern);
     }