diff --git a/javatests/google/registry/flows/domain/DomainCreateFlowTest.java b/javatests/google/registry/flows/domain/DomainCreateFlowTest.java
index fd2c6d48f..514fce144 100644
--- a/javatests/google/registry/flows/domain/DomainCreateFlowTest.java
+++ b/javatests/google/registry/flows/domain/DomainCreateFlowTest.java
@@ -154,7 +154,7 @@ public class DomainCreateFlowTest extends ResourceFlowTestCase<DomainCreateFlow,
 
   public DomainCreateFlowTest() {
     setEppInput("domain_create.xml");
-    clock.setTo(DateTime.parse("1999-04-03T22:00:00.0Z").minus(1));
+    clock.setTo(DateTime.parse("1999-04-03T22:00:00.0Z").minus(Duration.millis(1)));
   }
 
   @Before
diff --git a/javatests/google/registry/model/EppResourceUtilsTest.java b/javatests/google/registry/model/EppResourceUtilsTest.java
index 81475b341..2699fc84b 100644
--- a/javatests/google/registry/model/EppResourceUtilsTest.java
+++ b/javatests/google/registry/model/EppResourceUtilsTest.java
@@ -70,7 +70,7 @@ public class EppResourceUtilsTest {
         newHostResource("ns1.cat.tld").asBuilder()
             .setCreationTimeForTest(clock.nowUtc())
             .build());
-    assertThat(loadAtPointInTime(host, clock.nowUtc().minus(1)).now()).isNull();
+    assertThat(loadAtPointInTime(host, clock.nowUtc().minus(Duration.millis(1))).now()).isNull();
   }
 
   @Test
diff --git a/javatests/google/registry/tools/CreateTldCommandTest.java b/javatests/google/registry/tools/CreateTldCommandTest.java
index 1df04498b..c31ccc806 100644
--- a/javatests/google/registry/tools/CreateTldCommandTest.java
+++ b/javatests/google/registry/tools/CreateTldCommandTest.java
@@ -37,6 +37,7 @@ import java.io.PrintStream;
 import java.math.BigDecimal;
 import org.joda.money.Money;
 import org.joda.time.DateTime;
+import org.joda.time.Duration;
 import org.joda.time.Interval;
 import org.junit.Before;
 import org.junit.Test;
@@ -333,7 +334,9 @@ public class CreateTldCommandTest extends CommandTestCase<CreateTldCommand> {
         IllegalArgumentException.class,
         "Don't pass both --initial_tld_state and --tld_state_transitions");
     runCommandForced(
-        String.format("--tld_state_transitions=%s=PREDELEGATION,%s=SUNRISE", now, now.plus(1)),
+        String.format(
+            "--tld_state_transitions=%s=PREDELEGATION,%s=SUNRISE",
+            now, now.plus(Duration.millis(1))),
         "--initial_tld_state=GENERAL_AVAILABILITY",
         "--dns_writers=VoidDnsWriter",
         "xn--q9jyb4c");
diff --git a/javatests/google/registry/tools/UpdateTldCommandTest.java b/javatests/google/registry/tools/UpdateTldCommandTest.java
index cf2066913..5cb945252 100644
--- a/javatests/google/registry/tools/UpdateTldCommandTest.java
+++ b/javatests/google/registry/tools/UpdateTldCommandTest.java
@@ -530,7 +530,9 @@ public class UpdateTldCommandTest extends CommandTestCase<UpdateTldCommand> {
     thrown.expect(
         ParameterException.class, "not formatted correctly or has transition times out of order");
     runCommandForced(
-        String.format("--tld_state_transitions=%s=PREDELEGATION,%s=SUNRISE", now, now.minus(1)),
+        String.format(
+            "--tld_state_transitions=%s=PREDELEGATION,%s=SUNRISE",
+            now, now.minus(Duration.millis(1))),
         "xn--q9jyb4c");
   }
 
@@ -630,7 +632,9 @@ public class UpdateTldCommandTest extends CommandTestCase<UpdateTldCommand> {
     thrown.expect(
         ParameterException.class, "not formatted correctly or has transition times out of order");
     runCommandForced(
-        String.format("--renew_billing_cost_transitions=\"%s=USD 1,%s=USD 2\"", now, now.minus(1)),
+        String.format(
+            "--renew_billing_cost_transitions=\"%s=USD 1,%s=USD 2\"",
+            now, now.minus(Duration.millis(1))),
         "xn--q9jyb4c");
   }