diff --git a/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/model/PreconditionError.java b/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/model/PreconditionError.java
index 6ec7f7b2..7f2edd37 100644
--- a/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/model/PreconditionError.java
+++ b/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/model/PreconditionError.java
@@ -43,9 +43,22 @@ public enum PreconditionError {
                 }
             },
             plugin -> {
-                // TODO: Implement remediation function (See
-                // https://github.com/jenkinsci/plugin-modernizer-tool/pull/307)
-                return false;
+                PomModifier pomModifier = new PomModifier(
+                        plugin.getLocalRepository().resolve("pom.xml").toString());
+                try {
+                    boolean changed = pomModifier.replaceHttpWithHttps();
+                    if (changed) {
+                        pomModifier.savePom(
+                                plugin.getLocalRepository().resolve("pom.xml").toString());
+                        plugin.withoutErrors();
+                        return true;
+                    } else {
+                        return false;
+                    }
+                } catch (Exception e) {
+                    e.printStackTrace();
+                    return false;
+                }
             },
             "Found non-https repository URL in pom file preventing maven older than 3.8.1"),
 
@@ -126,6 +139,7 @@ public enum PreconditionError {
 
     /**
      * Constructor
+     *
      * @param isApplicable Predicate to check if the flag is applicable for the given XML document
      */
     PreconditionError(
@@ -137,8 +151,9 @@ public enum PreconditionError {
 
     /**
      * Check if the flag is applicable for the given Document and XPath
+     *
      * @param Document the XML document
-     * @param xpath the XPath object
+     * @param xpath    the XPath object
      * @return true if the flag is applicable, false otherwise
      */
     public boolean isApplicable(Document Document, XPath xpath) {
@@ -147,6 +162,7 @@ public boolean isApplicable(Document Document, XPath xpath) {
 
     /**
      * Remediate the error for the given plugin
+     *
      * @param plugin the plugin to remediate
      */
     public boolean remediate(Plugin plugin) {
@@ -155,6 +171,7 @@ public boolean remediate(Plugin plugin) {
 
     /**
      * Get the error message
+     *
      * @return the error message
      */
     public String getError() {
diff --git a/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifier.java b/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifier.java
index a628b082..ec0af107 100644
--- a/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifier.java
+++ b/plugin-modernizer-core/src/main/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifier.java
@@ -245,6 +245,29 @@ public void addBom(String groupId, String artifactId, String version) {
         dependenciesElement.appendChild(dependencyElement);
     }
 
+    /**
+     * Replaces 'http' with 'https' in repository URLs.
+     * <p>
+     * This method iterates through all the url elements in the POM file and replaces
+     * any URLs that start with 'http://' with 'https://'. This is useful for ensuring
+     * that all repository URLs use a secure connection.
+     *
+     * @return false Always returns false, indicating that no specific condition is met.
+     */
+    public boolean replaceHttpWithHttps() {
+        boolean changedAtLeastOneUrl = false;
+        NodeList repositoryUrls = document.getElementsByTagName("url");
+        for (int i = 0; i < repositoryUrls.getLength(); i++) {
+            Node urlNode = repositoryUrls.item(i);
+            String url = urlNode.getTextContent();
+            if (url.startsWith("http://")) {
+                urlNode.setTextContent(url.replace("http://", "https://"));
+                changedAtLeastOneUrl = true;
+            }
+        }
+        return changedAtLeastOneUrl;
+    }
+
     /**
      * Saves the modified POM file to the specified output path.
      *
diff --git a/plugin-modernizer-core/src/test/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifierTest.java b/plugin-modernizer-core/src/test/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifierTest.java
index b0c50bcc..705c3276 100644
--- a/plugin-modernizer-core/src/test/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifierTest.java
+++ b/plugin-modernizer-core/src/test/java/io/jenkins/tools/pluginmodernizer/core/utils/PomModifierTest.java
@@ -16,6 +16,8 @@
 import org.junit.jupiter.api.Test;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
 
 /**
  * Test class for PomModifier.
@@ -142,4 +144,28 @@ public void testUpdateJenkinsMinimalVersion() throws Exception {
         logger.info("Jenkins version found: " + jenkinsVersion);
         assertEquals("2.462.2", jenkinsVersion);
     }
+
+    /**
+     * Tests the replaceHttpWithHttps method of PomModifier.
+     *
+     * @throws Exception if an error occurs during the test
+     */
+    @Test
+    public void testReplaceHttpWithHttps() throws Exception {
+        PomModifier pomModifier = new PomModifier(OUTPUT_POM_PATH);
+        pomModifier.replaceHttpWithHttps();
+        pomModifier.savePom(OUTPUT_POM_PATH);
+
+        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+        Document doc = dBuilder.parse(new File(OUTPUT_POM_PATH));
+        doc.getDocumentElement().normalize();
+
+        NodeList repositoryUrls = doc.getElementsByTagName("url");
+        for (int i = 0; i < repositoryUrls.getLength(); i++) {
+            Node urlNode = repositoryUrls.item(i);
+            String url = urlNode.getTextContent();
+            assertTrue(url.startsWith("https://"), "URL should start with https://");
+        }
+    }
 }
diff --git a/plugin-modernizer-core/src/test/resources/test-pom.xml b/plugin-modernizer-core/src/test/resources/test-pom.xml
index 48f97bf1..1914d4c1 100644
--- a/plugin-modernizer-core/src/test/resources/test-pom.xml
+++ b/plugin-modernizer-core/src/test/resources/test-pom.xml
@@ -48,14 +48,14 @@
   <repositories>
     <repository>
       <id>repo.jenkins-ci.org</id>
-      <url>https://repo.jenkins-ci.org/public/</url>
+      <url>http://repo.jenkins-ci.org/public/</url>
     </repository>
   </repositories>
 
   <pluginRepositories>
     <pluginRepository>
       <id>repo.jenkins-ci.org</id>
-      <url>https://repo.jenkins-ci.org/public/</url>
+      <url>http://repo.jenkins-ci.org/public/</url>
     </pluginRepository>
   </pluginRepositories>