diff --git a/examples/pom.xml b/examples/pom.xml
index 269eada..3d91ebd 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -11,12 +11,28 @@
 
     <artifactId>kraken-api-examples</artifactId>
 
+    <properties>
+        <log4j.version>2.23.0</log4j.version>
+    </properties>
+
     <dependencies>
         <dependency>
             <groupId>dev.andstuff.kraken</groupId>
             <artifactId>kraken-api</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>${log4j.version}</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-slf4j2-impl</artifactId>
+            <version>${log4j.version}</version>
+            <scope>runtime</scope>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/examples/src/main/java/dev/andstuff/kraken/example/Examples.java b/examples/src/main/java/dev/andstuff/kraken/example/Examples.java
index 624c764..0d6f34f 100644
--- a/examples/src/main/java/dev/andstuff/kraken/example/Examples.java
+++ b/examples/src/main/java/dev/andstuff/kraken/example/Examples.java
@@ -13,48 +13,48 @@
 import dev.andstuff.kraken.api.model.endpoint.market.response.AssetPair;
 import dev.andstuff.kraken.api.model.endpoint.market.response.ServerTime;
 import dev.andstuff.kraken.api.model.endpoint.market.response.SystemStatus;
+import lombok.extern.slf4j.Slf4j;
 
+@Slf4j
 public class Examples {
 
     public static void main(String[] args) {
 
-
         /* Public endpoint examples */
 
         KrakenAPI publicAPI = new KrakenAPI();
 
         ServerTime serverTime = publicAPI.serverTime();
-        System.out.println(serverTime);
+        log.info("{}", serverTime);
 
         SystemStatus systemStatus = publicAPI.systemStatus();
-        System.out.println(systemStatus);
+        log.info("{}", systemStatus);
 
         Map<String, AssetInfo> assets1 = publicAPI.assetInfo(List.of("BTC", "ETH"));
-        System.out.println(assets1);
+        log.info("{}", assets1);
 
         Map<String, AssetInfo> assets2 = publicAPI.assetInfo(List.of("DOT", "ADA"), "currency");
-        System.out.println(assets2);
+        log.info("{}", assets2);
 
         Map<String, AssetPair> pairs1 = publicAPI.assetPairs(List.of("ETH/BTC", "ETH/USD"));
-        System.out.println(pairs1);
+        log.info("{}", pairs1);
 
         Map<String, AssetPair> pairs2 = publicAPI.assetPairs(List.of("DOT/USD", "ADA/USD"), AssetPair.Info.MARGIN);
-        System.out.println(pairs2);
+        log.info("{}", pairs2);
 
         JsonNode ticker = publicAPI.query(KrakenAPI.Public.TICKER, Map.of("pair", "XBTEUR"));
-        System.out.println(ticker);
+        log.info("{}", ticker);
 
         JsonNode trades = publicAPI.queryPublic("Trades", Map.of("pair", "XBTUSD", "count", "1"));
-        System.out.println(trades);
+        log.info("{}", trades);
 
         /* Private endpoint example */
 
         Properties apiKeys = readFromFile("/api-keys.properties");
-
         KrakenAPI api = new KrakenAPI(apiKeys.getProperty("key"), apiKeys.getProperty("secret"));
 
         JsonNode balance = api.query(KrakenAPI.Private.BALANCE);
-        System.out.println(balance);
+        log.info("{}", balance);
 
         JsonNode order = api.query(KrakenAPI.Private.ADD_ORDER, Map.of(
                 "ordertype", "limit",
@@ -64,6 +64,6 @@ public static void main(String[] args) {
                 "price", "1000",
                 "oflags", "post,fciq",
                 "validate", "true"));
-        System.out.println(order);
+        log.info("{}", order);
     }
 }
diff --git a/examples/src/main/java/dev/andstuff/kraken/example/JacksonTest.java b/examples/src/main/java/dev/andstuff/kraken/example/JacksonTest.java
deleted file mode 100644
index a9c46ed..0000000
--- a/examples/src/main/java/dev/andstuff/kraken/example/JacksonTest.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package dev.andstuff.kraken.example;
-
-import java.util.Optional;
-
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.MapperFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.json.JsonMapper;
-import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-
-public class JacksonTest {
-
-    private static final ObjectMapper OBJECT_MAPPER;
-
-    static {
-        OBJECT_MAPPER = JsonMapper.builder()
-                .enable(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS)
-                .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
-                .addModules(new JavaTimeModule(), new Jdk8Module())
-                .build();
-    }
-
-    public static void main(String[] args) throws JsonProcessingException {
-        MyRecord myRecord = OBJECT_MAPPER.readValue("{}", MyRecord.class);
-        System.out.println(myRecord);
-        System.out.println(myRecord.result().isEmpty());
-    }
-
-    public record MyRecord(Optional<MyClass> result) {}
-
-    public class MyClass {}
-}
diff --git a/examples/src/main/java/dev/andstuff/kraken/example/TotalRewards.java b/examples/src/main/java/dev/andstuff/kraken/example/TotalRewards.java
index d59daaa..2434fba 100644
--- a/examples/src/main/java/dev/andstuff/kraken/example/TotalRewards.java
+++ b/examples/src/main/java/dev/andstuff/kraken/example/TotalRewards.java
@@ -4,14 +4,11 @@
 import static java.util.Arrays.asList;
 import static java.util.Comparator.comparing;
 import static java.util.stream.Collectors.groupingBy;
-import static java.util.stream.Collectors.toList;
 
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintStream;
 import java.math.BigDecimal;
-import java.security.InvalidKeyException;
-import java.security.NoSuchAlgorithmException;
 import java.time.Instant;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -28,15 +25,15 @@
  */
 public class TotalRewards {
 
-    public static void main(String[] args) throws IOException, NoSuchAlgorithmException, InvalidKeyException, InterruptedException {
+    public static void main(String[] args) throws IOException, InterruptedException {
 
         Properties apiKeys = readFromFile("/api-keys.properties");
         KrakenAPI api = new KrakenAPI(apiKeys.getProperty("key"), apiKeys.getProperty("secret"));
 
-        Map<String, String> params = Map.of(
-                "type", "staking",
-                "without_count", "true",
-                "ofs", "0");
+        Map<String, String> params = new HashMap<>();
+        params.put("type", "staking");
+        params.put("without_count", "true");
+        params.put("ofs", "0");
 
         Map<String, JsonNode> rewards = new HashMap<>();
 
@@ -76,7 +73,7 @@ public static void main(String[] args) throws IOException, NoSuchAlgorithmExcept
             List<JsonNode> assetRewards = groupedRewards.get(asset).stream()
                     .filter(e -> !asList("migration", "spottostaking").contains(e.findValue("subtype").textValue()))
                     .sorted(comparing(e -> e.get("time").asInt()))
-                    .collect(toList());
+                    .toList();
 
             BigDecimal assetTotalRewardAmount = assetRewards.stream()
                     .map(e -> new BigDecimal(e.findValue("amount").textValue())
diff --git a/examples/src/main/resources/log4j2.xml b/examples/src/main/resources/log4j2.xml
new file mode 100644
index 0000000..d4aa8bc
--- /dev/null
+++ b/examples/src/main/resources/log4j2.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Configuration status="info">
+    <Properties>
+        <Property name="defaultPattern">[%d{ISO8601}] [%-20.20c{1.}] [%-7.7t] [%-5.5p] %m%n</Property>
+    </Properties>
+
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="${defaultPattern}"/>
+        </Console>
+    </Appenders>
+
+    <Loggers>
+        <Root level="info">
+            <AppenderRef ref="Console"/>
+        </Root>
+    </Loggers>
+</Configuration>
diff --git a/library/src/main/java/dev/andstuff/kraken/api/rest/DefaultKrakenRestRequester.java b/library/src/main/java/dev/andstuff/kraken/api/rest/DefaultKrakenRestRequester.java
index e35d659..f652fb3 100644
--- a/library/src/main/java/dev/andstuff/kraken/api/rest/DefaultKrakenRestRequester.java
+++ b/library/src/main/java/dev/andstuff/kraken/api/rest/DefaultKrakenRestRequester.java
@@ -21,10 +21,12 @@
 import dev.andstuff.kraken.api.model.endpoint.priv.PostParams;
 import dev.andstuff.kraken.api.model.endpoint.priv.PrivateEndpoint;
 import dev.andstuff.kraken.api.model.endpoint.pub.PublicEndpoint;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * {@link KrakenRestRequester} implementation using {@link HttpsURLConnection}.
  */
+@Slf4j
 public class DefaultKrakenRestRequester implements KrakenRestRequester {
 
     private static final ObjectMapper OBJECT_MAPPER;
@@ -51,7 +53,7 @@ public DefaultKrakenRestRequester(String key, String secret) {
     public <T> T execute(PublicEndpoint<T> endpoint) {
         try {
             HttpsURLConnection connection = createHttpsConnection(endpoint);
-            System.out.printf("Fetching %s%n", connection.getURL());
+            log.info("Fetching {}", connection.getURL());
             return parseResponse(connection.getInputStream(), endpoint);
         }
         catch (IOException e) {
@@ -72,7 +74,7 @@ public <T> T execute(PrivateEndpoint<T> endpoint) {
 
         try {
             HttpsURLConnection connection = createHttpsConnection(endpoint);
-            System.out.printf("Fetching %s%n", connection.getURL());
+            log.info("Fetching {}", connection.getURL());
             connection.addRequestProperty("API-Key", credentials.getKey());
             connection.addRequestProperty("API-Sign", credentials.sign(connection.getURL(), nonce, postData));
             connection.setDoOutput(true);
diff --git a/pom.xml b/pom.xml
index 5ed4471..b6c42c0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -52,6 +52,8 @@
         <!-- Third-party dependencies -->
         <jackson.version>2.16.1</jackson.version>
         <lombok.version>1.18.30</lombok.version>
+        <slf4j.version>2.0.12</slf4j.version>
+        <log4j.version>2.23.0</log4j.version>
 
         <!-- Maven plugins -->
         <maven-deploy-plugin.version>3.1.1</maven-deploy-plugin.version>
@@ -81,6 +83,11 @@
                 <version>${lombok.version}</version>
                 <scope>provided</scope>
             </dependency>
+            <dependency>
+                <groupId>org.slf4j</groupId>
+                <artifactId>slf4j-api</artifactId>
+                <version>${slf4j.version}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 
@@ -102,6 +109,10 @@
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
     </dependencies>
 
     <build>