diff --git a/CHANGES.md b/CHANGES.md
index a7034f6..4b63dea 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+# version 3.4.0
+- logging number of unchecked links (issue #84)
+- dependency upgrade for linkchecker-persistence
+
 # version 3.3.0
 - upgrading dependencies to Storm 2.6.1 and Storm Crawler 2.11  
   => requirement to change user agent string (issues #78, #79, #80)
diff --git a/pom.xml b/pom.xml
index 18fec79..acbb322 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,15 +5,15 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>eu.clarin.cmdi</groupId>
 	<artifactId>linkchecker</artifactId>
-	<version>3.3.0</version>
+	<version>3.4.0</version>
 	<packaging>jar</packaging>
 
    <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-      <storm.version>2.6.1</storm.version>
+      <storm.version>2.6.2</storm.version>
       <stormcrawler.version>2.11</stormcrawler.version>
-      <lombok.version>1.18.24</lombok.version>
-      <linkchecker-persistence.version>1.0.1</linkchecker-persistence.version>
+      <lombok.version>1.18.32</lombok.version>
+      <linkchecker-persistence.version>1.0.2</linkchecker-persistence.version>
       <mockserver.version>5.15.0</mockserver.version>
       <mockito.version>5.8.0</mockito.version>
       <junit.version>5.10.1</junit.version>
diff --git a/src/main/java/eu/clarin/linkchecker/config/Configuration.java b/src/main/java/eu/clarin/linkchecker/config/Configuration.java
index 4b92cc3..471c042 100644
--- a/src/main/java/eu/clarin/linkchecker/config/Configuration.java
+++ b/src/main/java/eu/clarin/linkchecker/config/Configuration.java
@@ -62,6 +62,8 @@ public class Configuration {
    public static List<Integer> undeterminedStatusCodes;
 
    public static List<Integer> restrictedAccessStatusCodes;
+
+   public static long logIntervalUncheckedLinks;
    
    public static final AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
 
@@ -84,6 +86,8 @@ public static synchronized void init(Map<String, Object> conf) {
          redirectStatusCodes = getIntegerList(Constants.REDIRECT_STATUS_CODES, conf);
          undeterminedStatusCodes = getIntegerList(Constants.UNDETERMINED_STATUS_CODES, conf);
          restrictedAccessStatusCodes = getIntegerList(Constants.RESTRICTED_ACCESS_STATUS_CODES, conf);
+
+         logIntervalUncheckedLinks = ConfUtils.getLong(conf, Constants.LOG_INTERVAL_UNCHECKED_LINKS, 86400000l);
          
          ConfigurableEnvironment environment = new StandardEnvironment();
          MutablePropertySources propertySources = environment.getPropertySources();
diff --git a/src/main/java/eu/clarin/linkchecker/config/Constants.java b/src/main/java/eu/clarin/linkchecker/config/Constants.java
index 1bbf2df..0abe99c 100644
--- a/src/main/java/eu/clarin/linkchecker/config/Constants.java
+++ b/src/main/java/eu/clarin/linkchecker/config/Constants.java
@@ -27,4 +27,6 @@ public class Constants {
     public static final String UNDETERMINED_STATUS_CODES = "undetermined.status.codes";
     public static final String RESTRICTED_ACCESS_STATUS_CODES = "restricted.access.status.codes";
 
+    public static final String LOG_INTERVAL_UNCHECKED_LINKS = "logInterval.uncheckedLinks";
+
 }
diff --git a/src/main/java/eu/clarin/linkchecker/spout/LPASpout.java b/src/main/java/eu/clarin/linkchecker/spout/LPASpout.java
index 9a1f881..dce383b 100644
--- a/src/main/java/eu/clarin/linkchecker/spout/LPASpout.java
+++ b/src/main/java/eu/clarin/linkchecker/spout/LPASpout.java
@@ -35,7 +35,9 @@ public class LPASpout extends AbstractQueryingSpout {
    protected String logIdprefix = "";
    
    private int counter = 0;
-   private long lastCheckpoint = System.currentTimeMillis();
+   private long lastCheckpoint =  System.currentTimeMillis();
+
+   private static long lastUncheckedLinks = 0;
    
    
    public LPASpout(String sql) {
@@ -96,7 +98,8 @@ protected void populateBuffer() {
       log.info("{} SQL query returned {} hits, distributed on {} queues in {} msec", logIdprefix, buffer.size(),
             buffer.numQueues(), timeTaken);
 
-
+      //we log the number of unchecked links
+      LPASpout.logUncheckedLinks();
    }
 
    
@@ -126,4 +129,18 @@ public void close() {
       
       Configuration.setActive(null, false);
    }
+
+   private static synchronized void logUncheckedLinks(){
+      if((LPASpout.lastUncheckedLinks + Configuration.logIntervalUncheckedLinks) < System.currentTimeMillis()){
+
+         LPASpout.lastUncheckedLinks = System.currentTimeMillis();
+
+         GenericRepository gRep = Configuration.ctx.getBean(GenericRepository.class);
+
+         try(Stream<Tuple> stream = gRep.findAll("SELECT COUNT(*) FROM url u WHERE u.id NOT IN (SELECT s.url_id from status s)", true).stream()){
+
+            stream.forEach(tuple -> log.info("number of unchecked links: {}", tuple.get(0)));
+         }
+      }
+   }
 }
diff --git a/src/main/resources/linkchecker-conf.yaml b/src/main/resources/linkchecker-conf.yaml
index f04b454..bd4f7bc 100644
--- a/src/main/resources/linkchecker-conf.yaml
+++ b/src/main/resources/linkchecker-conf.yaml
@@ -102,3 +102,5 @@ config:
   restricted.access.status.codes: [401, 403]
   
   directory.share: /share
+
+  logInterval.uncheckedLinks: 86400000