diff --git a/craft_providers/lxd/lxd.py b/craft_providers/lxd/lxd.py
index 696529bb..b96fad26 100644
--- a/craft_providers/lxd/lxd.py
+++ b/craft_providers/lxd/lxd.py
@@ -88,9 +88,10 @@ def version(self) -> str:
         """Query LXD version.
 
         The version is of the format:
-        <major>.<minor>[.<micro>]
+        <major>.<minor>[.<micro>] [LTS]
 
         Version examples:
+        - 5.21.0 LTS
         - 4.13
         - 4.0.5
         - 2.0.12
@@ -107,7 +108,14 @@ def version(self) -> str:
                 details=details_from_called_process_error(error),
             ) from error
 
-        return proc.stdout.strip()
+        version_string = proc.stdout.strip()
+        if version_string:
+            return version_string.split()[0]
+
+        raise LXDError(
+            "Failed to parse LXD version.",
+            details=f"Version data returned: {version_string!r}",
+        )
 
     def wait_ready(
         self,
diff --git a/tests/unit/lxd/test_lxd.py b/tests/unit/lxd/test_lxd.py
index 69f6f0e0..ec6f2b56 100644
--- a/tests/unit/lxd/test_lxd.py
+++ b/tests/unit/lxd/test_lxd.py
@@ -80,6 +80,7 @@ def test_init_error(fake_process):
         ("4.0", True),
         ("4.1.4", True),
         ("4.10", True),
+        ("5.21.0 LTS", True),
     ],
 )
 def test_is_supported_version(fake_process, version, compatible):