diff --git a/doc/configuration.rst b/doc/configuration.rst
index ba0f5040..f52257fb 100644
--- a/doc/configuration.rst
+++ b/doc/configuration.rst
@@ -1267,6 +1267,9 @@ Options
     meaning size in bytes, or it can be a string with ``k``, ``M``, ``G``
     suffix (using multiples of 1024).
 
+**iso_level**
+    (*int*) [optional] -- Set the ISO9660 conformance level. Valid numbers are 1 to 4.
+
 **split_iso_reserve** = 10MiB
     (*int|str*) -- how much free space should be left on each disk. The format
     is the same as for ``iso_size`` option.
diff --git a/pungi/checks.py b/pungi/checks.py
index 581bd9fc..a2434fce 100644
--- a/pungi/checks.py
+++ b/pungi/checks.py
@@ -746,6 +746,10 @@ def make_schema():
             ),
             "createiso_break_hardlinks": {"type": "boolean", "default": False},
             "createiso_use_xorrisofs": {"type": "boolean", "default": False},
+            "iso_level": {
+                "type": "number",
+                "enum": [1, 2, 3, 4],
+            },
             "iso_hfs_ppc64le_compatible": {"type": "boolean", "default": True},
             "multilib": _variant_arch_mapping(
                 {"$ref": "#/definitions/list_of_strings"}
diff --git a/pungi/createiso.py b/pungi/createiso.py
index cbd3fef3..4e1a5336 100644
--- a/pungi/createiso.py
+++ b/pungi/createiso.py
@@ -25,6 +25,7 @@ CreateIsoOpts = namedtuple(
         "os_tree",
         "hfs_compat",
         "use_xorrisofs",
+        "iso_level",
     ],
 )
 CreateIsoOpts.__new__.__defaults__ = (None,) * len(CreateIsoOpts._fields)
@@ -77,6 +78,7 @@ def make_image(f, opts):
         exclude=["./lost+found"],
         graft_points=opts.graft_points,
         use_xorrisofs=opts.use_xorrisofs,
+        iso_level=opts.iso_level,
         **mkisofs_kwargs
     )
     emit(f, cmd)
diff --git a/pungi/phases/createiso.py b/pungi/phases/createiso.py
index 083a9a58..529101f5 100644
--- a/pungi/phases/createiso.py
+++ b/pungi/phases/createiso.py
@@ -172,6 +172,7 @@ class CreateisoPhase(PhaseLoggerMixin, PhaseBase):
                         supported=self.compose.supported,
                         hfs_compat=self.compose.conf["iso_hfs_ppc64le_compatible"],
                         use_xorrisofs=self.compose.conf.get("createiso_use_xorrisofs"),
+                        iso_level=self.compose.conf.get("iso_level"),
                     )
 
                     if bootable:
diff --git a/pungi/phases/extra_isos.py b/pungi/phases/extra_isos.py
index abca3b1f..5db71a6f 100644
--- a/pungi/phases/extra_isos.py
+++ b/pungi/phases/extra_isos.py
@@ -115,6 +115,7 @@ class ExtraIsosThread(WorkerThread):
             supported=compose.supported,
             hfs_compat=compose.conf["iso_hfs_ppc64le_compatible"],
             use_xorrisofs=compose.conf.get("createiso_use_xorrisofs"),
+            iso_level=compose.conf.get("iso_level"),
         )
         if compose.conf["create_jigdo"]:
             jigdo_dir = compose.paths.compose.jigdo_dir(arch, variant)
diff --git a/pungi/wrappers/iso.py b/pungi/wrappers/iso.py
index 4cdbd3f6..3f438f74 100644
--- a/pungi/wrappers/iso.py
+++ b/pungi/wrappers/iso.py
@@ -146,6 +146,7 @@ def get_mkisofs_cmd(
     input_charset="utf-8",
     graft_points=None,
     use_xorrisofs=False,
+    iso_level=None,
 ):
     # following options are always enabled
     untranslated_filenames = True
@@ -155,6 +156,10 @@ def get_mkisofs_cmd(
     rock = True
 
     cmd = ["/usr/bin/xorrisofs" if use_xorrisofs else "/usr/bin/genisoimage"]
+
+    if iso_level:
+        cmd.extend(["-iso-level", str(iso_level)])
+
     if appid:
         cmd.extend(["-appid", appid])