diff --git a/docker/docker_client.go b/docker/docker_client.go
index 023c203ee3..94cbcb1d99 100644
--- a/docker/docker_client.go
+++ b/docker/docker_client.go
@@ -1097,6 +1097,11 @@ func isManifestUnknownError(err error) bool {
 	if errors.As(err, &e) && e.ErrorCode() == errcode.ErrorCodeUnknown && e.Message == "Not Found" {
 		return true
 	}
+	// Harbor v2.10.2
+	if errors.As(err, &e) && e.ErrorCode() == errcode.ErrorCodeUnknown && strings.Contains(strings.ToLower(e.Message), "not found") {
+		return true
+	}
+
 	// opencontainers/distribution-spec does not require the errcode.Error payloads to be used,
 	// but specifies that the HTTP status must be 404.
 	var unexpected *unexpectedHTTPResponseError
diff --git a/docker/docker_client_test.go b/docker/docker_client_test.go
index 4c57fe02dc..a7d16ef7b5 100644
--- a/docker/docker_client_test.go
+++ b/docker/docker_client_test.go
@@ -392,6 +392,19 @@ func TestIsManifestUnknownError(t *testing.T) {
 				"\r\n" +
 				"Not found\r\n",
 		},
+		{
+			name: "Harbor v2.10.2",
+			response: "HTTP/1.1 404 Not Found\r\n" +
+				"Content-Length: 153\r\n" +
+				"Connection: keep-alive\r\n" +
+				"Content-Type: application/json; charset=utf-8\r\n" +
+				"Date: Wed, 08 May 2024 08:14:59 GMT\r\n" +
+				"Server: nginx\r\n" +
+				"Set-Cookie: sid=f617c257877837614ada2561513d6827; Path=/; HttpOnly\r\n" +
+				"X-Request-Id: 1b151fb1-c943-4190-a9ce-5156ed5e3200\r\n" +
+				"\r\n" +
+				"{\"errors\":[{\"code\":\"NOT_FOUND\",\"message\":\"artifact test/alpine:sha256-443205b0cfcc78444321d56a2fe273f06e27b2c72b5058f8d7e975997d45b015.sig not found\"}]}\n",
+		},
 	} {
 		resp, err := http.ReadResponse(bufio.NewReader(bytes.NewReader([]byte(c.response))), nil)
 		require.NoError(t, err, c.name)
@@ -399,6 +412,6 @@ func TestIsManifestUnknownError(t *testing.T) {
 		err = fmt.Errorf("wrapped: %w", registryHTTPResponseToError(resp))
 
 		res := isManifestUnknownError(err)
-		assert.True(t, res, "%#v", err, c.name)
+		assert.True(t, res, "%s: %#v", c.name, err)
 	}
 }
diff --git a/docker/errors_test.go b/docker/errors_test.go
index 2463d275f4..38bc568b2f 100644
--- a/docker/errors_test.go
+++ b/docker/errors_test.go
@@ -173,6 +173,34 @@ func TestRegistryHTTPResponseToError(t *testing.T) {
 				assert.Equal(t, []byte("Not found\r"), e.Response)
 			},
 		},
+		{ // Harbor v2.10.2 uses an unspecified NOT_FOUND error code
+			name: "Harbor v2.10.2 manifest not found",
+			response: "HTTP/1.1 404 Not Found\r\n" +
+				"Content-Length: 153\r\n" +
+				"Connection: keep-alive\r\n" +
+				"Content-Type: application/json; charset=utf-8\r\n" +
+				"Date: Wed, 08 May 2024 08:14:59 GMT\r\n" +
+				"Server: nginx\r\n" +
+				"Set-Cookie: sid=f617c257877837614ada2561513d6827; Path=/; HttpOnly\r\n" +
+				"X-Request-Id: 1b151fb1-c943-4190-a9ce-5156ed5e3200\r\n" +
+				"\r\n" +
+				"{\"errors\":[{\"code\":\"NOT_FOUND\",\"message\":\"artifact test/alpine:sha256-443205b0cfcc78444321d56a2fe273f06e27b2c72b5058f8d7e975997d45b015.sig not found\"}]}\n",
+			errorString:       "unknown: artifact test/alpine:sha256-443205b0cfcc78444321d56a2fe273f06e27b2c72b5058f8d7e975997d45b015.sig not found",
+			errorType:         errcode.Error{},
+			unwrappedErrorPtr: &unwrappedErrcodeError,
+			errorCode:         &errcode.ErrorCodeUnknown,
+			fn: func(t *testing.T, err error) {
+				var e errcode.Error
+				ok := errors.As(err, &e)
+				require.True(t, ok)
+				// isManifestUnknownError is checking for this
+				assert.Equal(t, errcode.Error{
+					Code:    errcode.ErrorCodeUnknown, // The NOT_FOUND value is not defined, and turns into Unknown
+					Message: "artifact test/alpine:sha256-443205b0cfcc78444321d56a2fe273f06e27b2c72b5058f8d7e975997d45b015.sig not found",
+					Detail:  nil,
+				}, e)
+			},
+		},
 	} {
 		res, err := http.ReadResponse(bufio.NewReader(bytes.NewReader([]byte(c.response))), nil)
 		require.NoError(t, err, c.name)