diff --git a/daemon/inspect_fs.ml b/daemon/inspect_fs.ml
index 1426dc5c0..c47fd0139 100644
--- a/daemon/inspect_fs.ml
+++ b/daemon/inspect_fs.ml
@@ -259,6 +259,7 @@ and check_package_format { distro } =
   | None -> None
   | Some DISTRO_ALTLINUX
   | Some DISTRO_CENTOS
+  | Some DISTRO_CIRCLE
   | Some DISTRO_ROCKY
   | Some DISTRO_FEDORA
   | Some DISTRO_MAGEIA
@@ -331,6 +332,7 @@ and check_package_management { distro; version } =
      Some PACKAGE_MANAGEMENT_DNF
 
   | Some DISTRO_CENTOS
+  | Some DISTRO_CIRCLE
   | Some DISTRO_ROCKY
   | Some DISTRO_ORACLE_LINUX
   | Some DISTRO_REDHAT_BASED
diff --git a/daemon/inspect_fs_unix.ml b/daemon/inspect_fs_unix.ml
index 9c2b7e1ed..2b690795d 100644
--- a/daemon/inspect_fs_unix.ml
+++ b/daemon/inspect_fs_unix.ml
@@ -32,6 +32,8 @@ let re_rhel_no_minor = PCRE.compile "Red Hat.*release (\\d+)"
 let re_centos_old = PCRE.compile "CentOS.*release (\\d+).*Update (\\d+)"
 let re_centos = PCRE.compile "CentOS.*release (\\d+)\\.(\\d+)"
 let re_centos_no_minor = PCRE.compile "CentOS.*release (\\d+)"
+let re_circle= PCRE.compile "Circle Linux.*release (\\d+)\\.(\\d+)"
+let re_circle_no_minor = PCRE.compile "Circle Linux.*release (\\d+)"
 let re_rocky = PCRE.compile "Rocky Linux.*release (\\d+)\\.(\\d+)"
 let re_rocky_no_minor = PCRE.compile "Rocky Linux.*release (\\d+)"
 let re_scientific_linux_old =
@@ -111,7 +113,7 @@ let rec parse_os_release release_file data =
         * we detect that situation then bail out and use the release
         * files instead.
         *)
-       | { distro = Some (DISTRO_DEBIAN|DISTRO_CENTOS|DISTRO_ROCKY);
+       | { distro = Some (DISTRO_DEBIAN|DISTRO_CENTOS|DISTRO_CIRCLE|DISTRO_ROCKY);
            version = Some (_, 0) } ->
           false
 
@@ -145,6 +147,7 @@ and distro_of_os_release_id = function
   | "altlinux" -> Some DISTRO_ALTLINUX
   | "arch" -> Some DISTRO_ARCHLINUX
   | "centos" -> Some DISTRO_CENTOS
+  | "circle" -> Some DISTRO_CIRCLE
   | "coreos" -> Some DISTRO_COREOS
   | "debian" -> Some DISTRO_DEBIAN
   | "fedora" -> Some DISTRO_FEDORA
@@ -415,6 +418,10 @@ let linux_root_tests : tests = [
                                        DISTRO_CENTOS;
   "/etc/centos-release", parse_generic ~rex:re_centos_no_minor
                                        DISTRO_CENTOS;
+  "/etc/circle-release", parse_generic ~rex:re_circle
+                                       DISTRO_CIRCLE;
+  "/etc/circle-release", parse_generic ~rex:re_circle_no_minor
+                                       DISTRO_CIRCLE;
   "/etc/rocky-release", parse_generic ~rex:re_rocky
                                        DISTRO_ROCKY;
   "/etc/rocky-release", parse_generic ~rex:re_rocky_no_minor
@@ -434,6 +441,10 @@ let linux_root_tests : tests = [
                                        DISTRO_CENTOS;
   "/etc/redhat-release", parse_generic ~rex:re_centos_no_minor
                                        DISTRO_CENTOS;
+  "/etc/redhat-release", parse_generic ~rex:re_circle
+                                       DISTRO_CIRCLE;
+  "/etc/redhat-release", parse_generic ~rex:re_circle_no_minor
+                                       DISTRO_CIRCLE;
   "/etc/redhat-release", parse_generic ~rex:re_rocky
                                        DISTRO_ROCKY;
   "/etc/redhat-release", parse_generic ~rex:re_rocky_no_minor
diff --git a/daemon/inspect_types.ml b/daemon/inspect_types.ml
index 68b120153..f162ada25 100644
--- a/daemon/inspect_types.ml
+++ b/daemon/inspect_types.ml
@@ -71,6 +71,7 @@ and distro =
   | DISTRO_ARCHLINUX
   | DISTRO_BUILDROOT
   | DISTRO_CENTOS
+  | DISTRO_CIRCLE
   | DISTRO_CIRROS
   | DISTRO_COREOS
   | DISTRO_DEBIAN
@@ -208,6 +209,7 @@ and string_of_distro = function
   | DISTRO_ARCHLINUX -> "archlinux"
   | DISTRO_BUILDROOT -> "buildroot"
   | DISTRO_CENTOS -> "centos"
+  | DISTRO_CIRCLE -> "circle"
   | DISTRO_CIRROS -> "cirros"
   | DISTRO_COREOS -> "coreos"
   | DISTRO_DEBIAN -> "debian"
diff --git a/daemon/inspect_types.mli b/daemon/inspect_types.mli
index d3cd8845d..c775f9da0 100644
--- a/daemon/inspect_types.mli
+++ b/daemon/inspect_types.mli
@@ -78,6 +78,7 @@ and distro =
   | DISTRO_ARCHLINUX
   | DISTRO_BUILDROOT
   | DISTRO_CENTOS
+  | DISTRO_CIRCLE
   | DISTRO_CIRROS
   | DISTRO_COREOS
   | DISTRO_DEBIAN
diff --git a/generator/actions_inspection.ml b/generator/actions_inspection.ml
index 914fcbaad..33086abd3 100644
--- a/generator/actions_inspection.ml
+++ b/generator/actions_inspection.ml
@@ -178,6 +178,10 @@ Buildroot-derived distro, but not one we specifically recognize.
 
 CentOS.
 
+=item \"circle\"
+
+Circle Linux.
+
 =item \"cirros\"
 
 Cirros.
diff --git a/lib/inspect-icon.c b/lib/inspect-icon.c
index 3bffa4f80..84c811b23 100644
--- a/lib/inspect-icon.c
+++ b/lib/inspect-icon.c
@@ -138,6 +138,7 @@ guestfs_impl_inspect_get_icon (guestfs_h *g, const char *root, size_t *size_r,
     else if (STREQ (distro, "rhel") ||
              STREQ (distro, "redhat-based") ||
              STREQ (distro, "centos") ||
+             STREQ (distro, "circle") ||
              STREQ (distro, "rocky") ||
              STREQ (distro, "scientificlinux") ||
              STREQ (distro, "oraclelinux")) {
diff --git a/lib/inspect-osinfo.c b/lib/inspect-osinfo.c
index 1c10ff469..c77344f63 100644
--- a/lib/inspect-osinfo.c
+++ b/lib/inspect-osinfo.c
@@ -47,6 +47,10 @@ guestfs_impl_inspect_get_osinfo (guestfs_h *g, const char *root)
       else if (major == 6)
         return safe_asprintf (g, "%s%d.%d", distro, major, minor);
     }
+    else if (STREQ (distro, "circle")) {
+      if (major >= 8)
+        return safe_asprintf (g, "%s%d", distro, major);
+    }
     else if (STREQ (distro, "rocky")) {
       if (major >= 8)
         return safe_asprintf (g, "%s%d", distro, major);