diff --git a/lib/modules/manager/terragrunt/__fixtures__/2.hcl b/lib/modules/manager/terragrunt/__fixtures__/2.hcl
index f38c3924453967..2141ad2d1cbdc3 100644
--- a/lib/modules/manager/terragrunt/__fixtures__/2.hcl
+++ b/lib/modules/manager/terragrunt/__fixtures__/2.hcl
@@ -175,6 +175,16 @@ terraform {
   source = "git::https://gitlab.com/hashicorp/example?ref=v1.0.0"
 }
 
+# gitlab-tags https with custom port
+terraform {
+  source = "git::https://gitlab.com:4321/hashicorp/example?ref=v1.0.1"
+}
+
+# gitlab-tags ssh with custom port
+terraform {
+  source = "git::ssh://gitlab.com:1234/hashicorp/example?ref=v1.0.2"
+}
+
 # gitea-tags
 terraform {
   source = "git::https://gitea.com/hashicorp/example?ref=v1.0.0"
diff --git a/lib/modules/manager/terragrunt/__fixtures__/3.hcl b/lib/modules/manager/terragrunt/__fixtures__/3.hcl
index 3cf9e16f8bca42..7e6967d5e3a41c 100644
--- a/lib/modules/manager/terragrunt/__fixtures__/3.hcl
+++ b/lib/modules/manager/terragrunt/__fixtures__/3.hcl
@@ -175,6 +175,16 @@ terraform {
   source = "git::https://gitlab.com/hashicorp/example?ref=v1.0.0"
 }
 
+# gitlab-tags https with custom port
+terraform {
+  source = "git::https://gitlab.com:4321/hashicorp/example?ref=v1.0.1"
+}
+
+# gitlab-tags ssh with custom port
+terraform {
+  source = "git::ssh://gitlab.com:1234/hashicorp/example?ref=v1.0.2"
+}
+
 # gitea-tags
 terraform {
   source = "git::https://gitea.com/hashicorp/example?ref=v1.0.0"
diff --git a/lib/modules/manager/terragrunt/__fixtures__/4.hcl b/lib/modules/manager/terragrunt/__fixtures__/4.hcl
index 2eef263e14e3d5..6bce778dea0630 100644
--- a/lib/modules/manager/terragrunt/__fixtures__/4.hcl
+++ b/lib/modules/manager/terragrunt/__fixtures__/4.hcl
@@ -176,6 +176,16 @@ terraform {
   source = "git::https://gitlab.com/hashicorp/example?ref=v1.0.0"
 }
 
+# gitlab-tags https with custom port
+terraform {
+  source = "git::https://gitlab.com:4321/hashicorp/example?ref=v1.0.1"
+}
+
+# gitlab-tags ssh with custom port
+terraform {
+  source = "git::ssh://gitlab.com:1234/hashicorp/example?ref=v1.0.2"
+}
+
 # gitea-tags
 terraform {
   source = "git::https://gitea.com/hashicorp/example?ref=v1.0.0"
diff --git a/lib/modules/manager/terragrunt/extract.spec.ts b/lib/modules/manager/terragrunt/extract.spec.ts
index 90eaca7caf16e5..c54270a9b00898 100644
--- a/lib/modules/manager/terragrunt/extract.spec.ts
+++ b/lib/modules/manager/terragrunt/extract.spec.ts
@@ -222,6 +222,22 @@ describe('modules/manager/terragrunt/extract', () => {
             packageName: 'hashicorp/example',
             registryUrls: ['https://gitlab.com'],
           },
+          {
+            currentValue: 'v1.0.1',
+            datasource: 'gitlab-tags',
+            depName: 'gitlab.com/hashicorp/example',
+            depType: 'gitTags',
+            packageName: 'hashicorp/example',
+            registryUrls: ['https://gitlab.com:4321'],
+          },
+          {
+            currentValue: 'v1.0.2',
+            datasource: 'gitlab-tags',
+            depName: 'gitlab.com/hashicorp/example',
+            depType: 'gitTags',
+            packageName: 'hashicorp/example',
+            registryUrls: ['https://gitlab.com'],
+          },
           {
             currentValue: 'v1.0.0',
             datasource: 'gitea-tags',
@@ -232,7 +248,7 @@ describe('modules/manager/terragrunt/extract', () => {
           },
         ],
       });
-      expect(res?.deps).toHaveLength(33);
+      expect(res?.deps).toHaveLength(35);
       expect(res?.deps.filter((dep) => dep.skipReason)).toHaveLength(4);
     });
 
@@ -417,6 +433,22 @@ describe('modules/manager/terragrunt/extract', () => {
             packageName: 'hashicorp/example',
             registryUrls: ['https://gitlab.com'],
           },
+          {
+            currentValue: 'v1.0.1',
+            datasource: 'gitlab-tags',
+            depName: 'gitlab.com/hashicorp/example',
+            depType: 'gitTags',
+            packageName: 'hashicorp/example',
+            registryUrls: ['https://gitlab.com:4321'],
+          },
+          {
+            currentValue: 'v1.0.2',
+            datasource: 'gitlab-tags',
+            depName: 'gitlab.com/hashicorp/example',
+            depType: 'gitTags',
+            packageName: 'hashicorp/example',
+            registryUrls: ['https://gitlab.com'],
+          },
           {
             currentValue: 'v1.0.0',
             datasource: 'gitea-tags',
@@ -427,7 +459,7 @@ describe('modules/manager/terragrunt/extract', () => {
           },
         ],
       });
-      expect(res?.deps).toHaveLength(33);
+      expect(res?.deps).toHaveLength(35);
       expect(res?.deps.filter((dep) => dep.skipReason)).toHaveLength(4);
     });
 
@@ -612,6 +644,22 @@ describe('modules/manager/terragrunt/extract', () => {
             packageName: 'hashicorp/example',
             registryUrls: ['https://gitlab.com'],
           },
+          {
+            currentValue: 'v1.0.1',
+            datasource: 'gitlab-tags',
+            depName: 'gitlab.com/hashicorp/example',
+            depType: 'gitTags',
+            packageName: 'hashicorp/example',
+            registryUrls: ['https://gitlab.com:4321'],
+          },
+          {
+            currentValue: 'v1.0.2',
+            datasource: 'gitlab-tags',
+            depName: 'gitlab.com/hashicorp/example',
+            depType: 'gitTags',
+            packageName: 'hashicorp/example',
+            registryUrls: ['https://gitlab.com'],
+          },
           {
             currentValue: 'v1.0.0',
             datasource: 'gitea-tags',
@@ -622,7 +670,7 @@ describe('modules/manager/terragrunt/extract', () => {
           },
         ],
       });
-      expect(res?.deps).toHaveLength(33);
+      expect(res?.deps).toHaveLength(35);
       expect(res?.deps.filter((dep) => dep.skipReason)).toHaveLength(4);
     });
 
diff --git a/lib/modules/manager/terragrunt/modules.ts b/lib/modules/manager/terragrunt/modules.ts
index c214abb4570825..3b9821460086c6 100644
--- a/lib/modules/manager/terragrunt/modules.ts
+++ b/lib/modules/manager/terragrunt/modules.ts
@@ -68,27 +68,29 @@ export function analyseTerragruntModule(
     dep.currentValue = githubRefMatch.groups.tag;
     dep.datasource = GithubTagsDatasource.id;
   } else if (gitTagsRefMatch?.groups) {
-    const { url, host, path, tag } = gitTagsRefMatch.groups;
-    const containsSubDirectory = path.includes('//');
+    const { url, tag } = gitTagsRefMatch.groups;
+    const { hostname, host, origin, pathname, protocol } = new URL(url);
+    const containsSubDirectory = pathname.includes('//');
     if (containsSubDirectory) {
       logger.debug('Terragrunt module contains subdirectory');
     }
     dep.depType = 'gitTags';
     // We don't want to have .git or subdirectory in the depName
-    dep.depName = `${host}/${path.split('//')[0].replace('.git', '')}`;
+    dep.depName = `${hostname}${pathname.split('//')[0].replace('.git', '')}`;
     dep.currentValue = tag;
     dep.datasource = detectGitTagDatasource(url);
     if (dep.datasource === GitTagsDatasource.id) {
       if (containsSubDirectory) {
-        const [protocol, hostAndPath] = url.split('//');
-        dep.packageName = `${protocol}//${hostAndPath}`;
+        dep.packageName = `${origin}${pathname.split('//')[0]}`;
       } else {
         dep.packageName = url;
       }
     } else {
       // The packageName should only contain the path to the repository
-      dep.packageName = path.split('//')[0];
-      dep.registryUrls = [`https://${host}`];
+      dep.packageName = pathname.replace(/^\//, '').split('//')[0];
+      dep.registryUrls = [
+        protocol === 'https:' ? `https://${host}` : `https://${hostname}`,
+      ];
     }
   } else if (tfrVersionMatch?.groups) {
     dep.depType = 'terragrunt';