diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/Crawler.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/Crawler.java
index 85de429..10693da 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/Crawler.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/Crawler.java
@@ -2,11 +2,13 @@ package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import io.quarkus.runtime.annotations.RegisterForReflection;
 import java.time.Instant;
 import java.util.List;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class Crawler {
     @JsonProperty("Classifiers")
     private List<String> classifiers;
diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/Database.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/Database.java
index 0eb7efb..15fb688 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/Database.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/Database.java
@@ -1,12 +1,14 @@
 package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.quarkus.runtime.annotations.RegisterForReflection;
 import java.time.Instant;
 import java.util.Map;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class Database {
     @JsonProperty("Name")
     private String name;
diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/Job.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/Job.java
index 1353a4e..e0c3d9f 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/Job.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/Job.java
@@ -1,6 +1,7 @@
 package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.databind.JsonNode;
 import io.quarkus.runtime.annotations.RegisterForReflection;
@@ -9,6 +10,7 @@ import java.time.Instant;
 import java.util.Map;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class Job {
     @JsonProperty("AllocatedCapacity")
     private Integer allocatedCapacity;
diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/LastCrawlInfo.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/LastCrawlInfo.java
index 7a18eea..c234f4a 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/LastCrawlInfo.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/LastCrawlInfo.java
@@ -2,10 +2,12 @@ package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import io.quarkus.runtime.annotations.RegisterForReflection;
 import java.time.Instant;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class LastCrawlInfo {
     @JsonProperty("ErrorMessage")
     private String errorMessage;
diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/Partition.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/Partition.java
index aa52d5c..532b298 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/Partition.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/Partition.java
@@ -1,6 +1,7 @@
 package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.quarkus.runtime.annotations.RegisterForReflection;
 import java.time.Instant;
@@ -8,6 +9,7 @@ import java.util.List;
 import java.util.Map;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class Partition {
     @JsonProperty("Values")
     private List<String> values;
diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/Table.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/Table.java
index 46a6698..971b559 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/Table.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/Table.java
@@ -1,6 +1,7 @@
 package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.quarkus.runtime.annotations.RegisterForReflection;
 import java.time.Instant;
@@ -8,6 +9,7 @@ import java.util.List;
 import java.util.Map;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class Table {
     @JsonProperty("Name")
     private String name;
diff --git a/src/main/java/io/github/hectorvent/floci/services/glue/model/UserDefinedFunction.java b/src/main/java/io/github/hectorvent/floci/services/glue/model/UserDefinedFunction.java
index 9fa3f0b..e2accdf 100644
--- a/src/main/java/io/github/hectorvent/floci/services/glue/model/UserDefinedFunction.java
+++ b/src/main/java/io/github/hectorvent/floci/services/glue/model/UserDefinedFunction.java
@@ -1,6 +1,7 @@
 package io.github.hectorvent.floci.services.glue.model;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.quarkus.runtime.annotations.RegisterForReflection;
 
@@ -8,6 +9,7 @@ import java.time.Instant;
 import java.util.List;
 
 @RegisterForReflection
+@JsonInclude(JsonInclude.Include.NON_NULL)
 public class UserDefinedFunction {
     @JsonProperty("FunctionName")
     private String functionName;
diff --git a/src/test/java/io/github/hectorvent/floci/services/glue/GlueOmitsNullFieldsIntegrationTest.java b/src/test/java/io/github/hectorvent/floci/services/glue/GlueOmitsNullFieldsIntegrationTest.java
new file mode 100644
index 0000000..9d9a3f1
--- /dev/null
+++ b/src/test/java/io/github/hectorvent/floci/services/glue/GlueOmitsNullFieldsIntegrationTest.java
@@ -0,0 +1,60 @@
+package io.github.hectorvent.floci.services.glue;
+
+import io.github.hectorvent.floci.testing.RestAssuredJsonUtils;
+import io.quarkus.test.junit.QuarkusTest;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import java.util.UUID;
+
+import static io.restassured.RestAssured.given;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.hasKey;
+import static org.hamcrest.Matchers.not;
+import static org.hamcrest.Matchers.notNullValue;
+
+/**
+ * AWS leaves unset fields out of Glue responses. A null timestamp instead breaks
+ * the AWS SDK for JavaScript v3, which rejects anything but a number there.
+ */
+@QuarkusTest
+class GlueOmitsNullFieldsIntegrationTest {
+
+    private static final String CONTENT_TYPE = "application/x-amz-json-1.1";
+    private static final String DATABASE = "nulls_" + UUID.randomUUID().toString().substring(0, 8);
+
+    @BeforeAll
+    static void configureRestAssured() {
+        RestAssuredJsonUtils.configureAwsContentTypes();
+    }
+
+    private static io.restassured.response.ValidatableResponse glue(String action, String body) {
+        return given().contentType(CONTENT_TYPE)
+                .header("X-Amz-Target", "AWSGlue." + action)
+                .body(body)
+        .when().post("/")
+        .then().statusCode(200);
+    }
+
+    @Test
+    void aNewTableHasNoUpdateOrLastAccessTime() {
+        glue("CreateDatabase", "{\"DatabaseInput\": {\"Name\": \"" + DATABASE + "\"}}");
+        glue("CreateTable", """
+                {
+                  "DatabaseName": "%s",
+                  "TableInput": {
+                    "Name": "orders",
+                    "StorageDescriptor": {"Columns": [{"Name": "id", "Type": "int"}], "Location": "s3://data/orders/"}
+                  }
+                }
+                """.formatted(DATABASE));
+
+        glue("GetTables", "{\"DatabaseName\": \"" + DATABASE + "\"}")
+                .body("TableList[0].Name", equalTo("orders"))
+                .body("TableList[0].CreateTime", notNullValue())
+                .body("TableList[0]", not(hasKey("UpdateTime")))
+                .body("TableList[0]", not(hasKey("LastAccessTime")));
+        glue("GetDatabase", "{\"Name\": \"" + DATABASE + "\"}")
+                .body("Database", not(hasKey("Description")));
+    }
+}