diff --git a/jenkins_jobs/modules/scm.py b/jenkins_jobs/modules/scm.py
index b16187fd2..bd7e0a53f 100644
--- a/jenkins_jobs/modules/scm.py
+++ b/jenkins_jobs/modules/scm.py
@@ -322,6 +322,8 @@ def git(registry, xml_parent, data):
               during clone (optional)
             * **timeout** (`int`) - Specify a timeout (in minutes) for
               submodules operations (default 10).
+            * **threads** (`int`) - Number of parallel processes to be used when
+              updating submodules. Default is to use a single thread for submodule updates.
         * **timeout** (`str`) - Timeout for git commands in minutes (optional)
         * **use-author** (`bool`): Use author rather than committer in Jenkin's
             build changeset (default false)
@@ -675,6 +677,7 @@ def git_extensions(xml_parent, data):
             data["submodule"].get("reference-repo", "")
         )
         XML.SubElement(ext, "timeout").text = str(data["submodule"].get("timeout", 10))
+        XML.SubElement(ext, "threads").text = str(data["submodule"].get("threads", 1))
     if "timeout" in data:
         ext_name = impl_prefix + "CheckoutOption"
         if trait:
diff --git a/tests/macros/fixtures/scm/obj-in-scm-macro001.xml b/tests/macros/fixtures/scm/obj-in-scm-macro001.xml
index 9918f252c..8cbe8834d 100644
--- a/tests/macros/fixtures/scm/obj-in-scm-macro001.xml
+++ b/tests/macros/fixtures/scm/obj-in-scm-macro001.xml
@@ -46,6 +46,7 @@
         <parentCredentials>false</parentCredentials>
         <reference/>
         <timeout>10</timeout>
+        <threads>1</threads>
       </hudson.plugins.git.extensions.impl.SubmoduleOption>
     </extensions>
   </scm>
diff --git a/tests/multibranch/fixtures/scm_bitbucket_full.xml b/tests/multibranch/fixtures/scm_bitbucket_full.xml
index d7e5be355..03b0c867f 100644
--- a/tests/multibranch/fixtures/scm_bitbucket_full.xml
+++ b/tests/multibranch/fixtures/scm_bitbucket_full.xml
@@ -140,6 +140,7 @@
                 <parentCredentials>true</parentCredentials>
                 <reference/>
                 <timeout>100</timeout>
+                <threads>1</threads>
               </extension>
             </jenkins.plugins.git.traits.SubmoduleOptionTrait>
             <jenkins.plugins.git.traits.CheckoutOptionTrait>
diff --git a/tests/multibranch/fixtures/scm_bitbucket_full.yaml b/tests/multibranch/fixtures/scm_bitbucket_full.yaml
index 4a0906e57..b073ca03a 100644
--- a/tests/multibranch/fixtures/scm_bitbucket_full.yaml
+++ b/tests/multibranch/fixtures/scm_bitbucket_full.yaml
@@ -96,6 +96,7 @@ scm:
             recursive: true
             parent-credentials: true
             timeout: 100
+            threads: 1
         timeout: "100"
         skip-notifications: true
         use-author: true
diff --git a/tests/multibranch/fixtures/scm_git_full.xml b/tests/multibranch/fixtures/scm_git_full.xml
index cec382443..c7393ff12 100644
--- a/tests/multibranch/fixtures/scm_git_full.xml
+++ b/tests/multibranch/fixtures/scm_git_full.xml
@@ -98,6 +98,7 @@
                 <parentCredentials>true</parentCredentials>
                 <reference/>
                 <timeout>100</timeout>
+                <threads>1</threads>
               </extension>
             </jenkins.plugins.git.traits.SubmoduleOptionTrait>
             <jenkins.plugins.git.traits.CheckoutOptionTrait>
diff --git a/tests/multibranch/fixtures/scm_git_full.yaml b/tests/multibranch/fixtures/scm_git_full.yaml
index 4ba18202a..65e51b761 100644
--- a/tests/multibranch/fixtures/scm_git_full.yaml
+++ b/tests/multibranch/fixtures/scm_git_full.yaml
@@ -85,6 +85,7 @@ scm:
             recursive: true
             parent-credentials: true
             timeout: 100
+            threads: 1
         timeout: "100"
         use-author: true
         wipe-workspace: true
diff --git a/tests/multibranch/fixtures/scm_github_full.xml b/tests/multibranch/fixtures/scm_github_full.xml
index 1bcfcb93a..5dc7ff67f 100644
--- a/tests/multibranch/fixtures/scm_github_full.xml
+++ b/tests/multibranch/fixtures/scm_github_full.xml
@@ -122,6 +122,7 @@
                 <parentCredentials>true</parentCredentials>
                 <reference/>
                 <timeout>100</timeout>
+                <threads>1</threads>
               </extension>
             </jenkins.plugins.git.traits.SubmoduleOptionTrait>
             <jenkins.plugins.git.traits.CheckoutOptionTrait>
diff --git a/tests/multibranch/fixtures/scm_github_full.yaml b/tests/multibranch/fixtures/scm_github_full.yaml
index 835950281..06d827029 100644
--- a/tests/multibranch/fixtures/scm_github_full.yaml
+++ b/tests/multibranch/fixtures/scm_github_full.yaml
@@ -96,6 +96,7 @@ scm:
             recursive: true
             parent-credentials: true
             timeout: 100
+            threads: 1
         timeout: "100"
         skip-notifications: true
         use-author: true
diff --git a/tests/scm/fixtures/git-submodule01.xml b/tests/scm/fixtures/git-submodule01.xml
index 3d36a7145..c935e6741 100644
--- a/tests/scm/fixtures/git-submodule01.xml
+++ b/tests/scm/fixtures/git-submodule01.xml
@@ -29,6 +29,7 @@
         <parentCredentials>true</parentCredentials>
         <reference>/jenkins_home/.gitcache/submodules</reference>
         <timeout>15</timeout>
+        <threads>1</threads>
       </hudson.plugins.git.extensions.impl.SubmoduleOption>
       <hudson.plugins.git.extensions.impl.WipeWorkspace/>
     </extensions>
diff --git a/tests/scm/fixtures/git-submodule01.yaml b/tests/scm/fixtures/git-submodule01.yaml
index dc2ab720b..a83851c64 100644
--- a/tests/scm/fixtures/git-submodule01.yaml
+++ b/tests/scm/fixtures/git-submodule01.yaml
@@ -8,3 +8,4 @@ scm:
             parent-credentials: true
             reference-repo: /jenkins_home/.gitcache/submodules
             timeout: 15
+            threads: 1