diff --git a/ext/IpaperArchGDALExt/IpaperArchGDALExt.jl b/ext/IpaperArchGDALExt/IpaperArchGDALExt.jl
index f19ecb0..343b65b 100644
--- a/ext/IpaperArchGDALExt/IpaperArchGDALExt.jl
+++ b/ext/IpaperArchGDALExt/IpaperArchGDALExt.jl
@@ -12,7 +12,7 @@ using ArchGDAL.GDAL.GDAL_jll: gdalinfo_path, ogrinfo_path
 using Ipaper.sf
 import Ipaper.sf: write_gdal, read_gdal, gdalinfo, getgeotransform, 
   gdal_polygonize, nband, nlayer
-import Ipaper.sf: gdal_info, org_info
+import Ipaper.sf: gdal_info, org_info, bandnames, set_bandnames
 # import Ipaper.sf: WGS84
 
 include("gdal_basic.jl")
diff --git a/src/sf/sf.jl b/src/sf/sf.jl
index 2c61b04..b06848d 100644
--- a/src/sf/sf.jl
+++ b/src/sf/sf.jl
@@ -11,6 +11,7 @@ export range2bbox
 export st_bbox, st_dims, st_cellsize
 export write_gdal, read_gdal, st_write, st_read
 export gdal_polygonize, rm_shp, nlyr, nband, nlayer
+export bandnames, set_bandnames
 export getgeotransform
 
 function nband end
@@ -20,6 +21,8 @@ function read_gdal end
 function write_gdal end
 function gdal_info end
 function org_info end
+function bandnames end
+function set_bandnames end
 
 nlyr = nband
 st_write = write_gdal
diff --git a/src/tools.jl b/src/tools.jl
index ec69071..96841bf 100644
--- a/src/tools.jl
+++ b/src/tools.jl
@@ -130,7 +130,6 @@ function zip_continue(x::AbstractVector{<:Integer})
   res
 end
 
-
 # using Interpolations
 # function approx(x, y, xout)
 #   interp_linear_extrap = linear_interpolation(x, y, extrapolation_bc=Line())