diff --git a/src/main/java/org/nanopub/NanopubImpl.java b/src/main/java/org/nanopub/NanopubImpl.java
index 963d362..8f53dd3 100644
--- a/src/main/java/org/nanopub/NanopubImpl.java
+++ b/src/main/java/org/nanopub/NanopubImpl.java
@@ -27,6 +27,8 @@
 import org.apache.commons.lang3.tuple.Pair;
 import org.apache.http.Header;
 import org.apache.http.HttpResponse;
+import org.apache.http.client.config.CookieSpecs;
+import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.eclipse.rdf4j.RDF4JException;
@@ -237,7 +239,8 @@ public NanopubImpl(URL url) throws MalformedNanopubException, RDF4JException, IO
 	private HttpResponse getNanopub(URL url) throws IOException {
 		HttpGet get = new HttpGet(url.toString());
 		get.setHeader("Accept", "application/trig; q=1, application/x-trig; q=1, text/x-nquads; q=0.1, application/trix; q=0.1");
-		HttpResponse response = HttpClientBuilder.create().build().execute(get);
+		RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD).build();
+		HttpResponse response = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build().execute(get);
 		int statusCode = response.getStatusLine().getStatusCode();
 		if (statusCode == 404 || statusCode == 410) {
 			throw new FileNotFoundException(response.getStatusLine().getReasonPhrase());
diff --git a/src/main/java/org/nanopub/extra/security/IntroNanopub.java b/src/main/java/org/nanopub/extra/security/IntroNanopub.java
index dd5b0dc..eb139ce 100644
--- a/src/main/java/org/nanopub/extra/security/IntroNanopub.java
+++ b/src/main/java/org/nanopub/extra/security/IntroNanopub.java
@@ -9,6 +9,7 @@
 
 import org.apache.http.HttpResponse;
 import org.apache.http.client.HttpClient;
+import org.apache.http.client.config.CookieSpecs;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.HttpClientBuilder;
@@ -35,7 +36,8 @@ public class IntroNanopub {
 
 	static {
 		RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(1000)
-				.setConnectionRequestTimeout(100).setSocketTimeout(1000).build();
+				.setConnectionRequestTimeout(100).setSocketTimeout(1000)
+				.setCookieSpec(CookieSpecs.STANDARD).build();
 		defaultHttpClient = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build();
 	}
 
diff --git a/src/main/java/org/nanopub/extra/server/FetchIndex.java b/src/main/java/org/nanopub/extra/server/FetchIndex.java
index 35c40dc..f488198 100644
--- a/src/main/java/org/nanopub/extra/server/FetchIndex.java
+++ b/src/main/java/org/nanopub/extra/server/FetchIndex.java
@@ -11,6 +11,7 @@
 import java.util.Set;
 
 import org.apache.http.client.HttpClient;
+import org.apache.http.client.config.CookieSpecs;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.conn.ConnectionPoolTimeoutException;
 import org.apache.http.impl.client.HttpClientBuilder;
@@ -83,7 +84,8 @@ public FetchIndex(String indexUri, OutputStream out, RDFFormat format, boolean w
 		}
 		nanopubCount = 0;
 		RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(2000)
-				.setConnectionRequestTimeout(100).setSocketTimeout(2000).build();
+				.setConnectionRequestTimeout(100).setSocketTimeout(2000)
+				.setCookieSpec(CookieSpecs.STANDARD).build();
 		PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
 		connManager.setDefaultMaxPerRoute(10);
 		connManager.setMaxTotal(1000);
diff --git a/src/main/java/org/nanopub/extra/server/GetNanopub.java b/src/main/java/org/nanopub/extra/server/GetNanopub.java
index acdb78f..06e809b 100644
--- a/src/main/java/org/nanopub/extra/server/GetNanopub.java
+++ b/src/main/java/org/nanopub/extra/server/GetNanopub.java
@@ -14,6 +14,7 @@
 
 import org.apache.http.HttpResponse;
 import org.apache.http.client.HttpClient;
+import org.apache.http.client.config.CookieSpecs;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.HttpClientBuilder;
@@ -142,7 +143,8 @@ public static Nanopub get(String artifactCode, ServerInfo serverInfo)
 	public static Nanopub get(String artifactCode, String serverUrl)
 			throws IOException, RDF4JException, MalformedNanopubException {
 		RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(1000)
-				.setConnectionRequestTimeout(100).setSocketTimeout(1000).build();
+				.setConnectionRequestTimeout(100).setSocketTimeout(1000)
+				.setCookieSpec(CookieSpecs.STANDARD).build();
 		HttpClient c = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build();
 		return get(artifactCode, serverUrl, c);
 	}
diff --git a/src/main/java/org/nanopub/extra/server/NanopubServerUtils.java b/src/main/java/org/nanopub/extra/server/NanopubServerUtils.java
index 68f06f2..97ccf5a 100644
--- a/src/main/java/org/nanopub/extra/server/NanopubServerUtils.java
+++ b/src/main/java/org/nanopub/extra/server/NanopubServerUtils.java
@@ -10,6 +10,7 @@
 
 import org.apache.http.HttpResponse;
 import org.apache.http.client.HttpClient;
+import org.apache.http.client.config.CookieSpecs;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.HttpClientBuilder;
@@ -57,7 +58,8 @@ public static List<String> loadList(String url) throws IOException {
 		try {
 			if (httpClient == null) {
 				RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(2000)
-						.setConnectionRequestTimeout(100).setSocketTimeout(2000).build();
+						.setConnectionRequestTimeout(100).setSocketTimeout(2000)
+						.setCookieSpec(CookieSpecs.STANDARD).build();
 				PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
 				connManager.setDefaultMaxPerRoute(10);
 				connManager.setMaxTotal(1000);
diff --git a/src/main/java/org/nanopub/extra/server/PublishNanopub.java b/src/main/java/org/nanopub/extra/server/PublishNanopub.java
index 7a73b99..3ae09be 100644
--- a/src/main/java/org/nanopub/extra/server/PublishNanopub.java
+++ b/src/main/java/org/nanopub/extra/server/PublishNanopub.java
@@ -8,6 +8,8 @@
 import java.util.Map;
 
 import org.apache.http.HttpResponse;
+import org.apache.http.client.config.CookieSpecs;
+import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.entity.StringEntity;
 import org.apache.http.impl.client.HttpClientBuilder;
@@ -185,7 +187,8 @@ public void publishNanopub(Nanopub nanopub) throws IOException {
 				String nanopubString = NanopubUtils.writeToString(nanopub, RDFFormat.TRIG);
 				post.setEntity(new StringEntity(nanopubString, "UTF-8"));
 				post.setHeader("Content-Type", RDFFormat.TRIG.getDefaultMIMEType());
-				HttpResponse response = HttpClientBuilder.create().build().execute(post);
+				RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD).build();
+				HttpResponse response = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build().execute(post);
 				int code = response.getStatusLine().getStatusCode();
 				if (code >= 200 && code < 300) {
 					if (usedServers.containsKey(serverUrl)) {
diff --git a/src/main/java/org/nanopub/extra/server/ServerInfo.java b/src/main/java/org/nanopub/extra/server/ServerInfo.java
index 447ae98..928ab13 100644
--- a/src/main/java/org/nanopub/extra/server/ServerInfo.java
+++ b/src/main/java/org/nanopub/extra/server/ServerInfo.java
@@ -7,6 +7,7 @@
 import java.nio.charset.Charset;
 
 import org.apache.http.client.HttpClient;
+import org.apache.http.client.config.CookieSpecs;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.HttpClientBuilder;
@@ -38,7 +39,8 @@ protected static ServerInfo load(String serverUrl, Class<? extends ServerInfo> s
 		InputStream in = null;
 		try {
 			RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(1000)
-					.setConnectionRequestTimeout(100).setSocketTimeout(1000).build();
+					.setConnectionRequestTimeout(100).setSocketTimeout(1000)
+					.setCookieSpec(CookieSpecs.STANDARD).build();
 			HttpClient c = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build();
 		    in = c.execute(get).getEntity().getContent();
 			si = new Gson().fromJson(new InputStreamReader(in, Charset.forName("UTF-8")), serverInfoClass);