diff --git a/Project.toml b/Project.toml
index f7bf104..64ad162 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "NativeFileDialog"
 uuid = "e1fe445b-aa65-4df4-81c1-2041507f0fd4"
 authors = ["José Joaquín Zubieta Rico <jose.zubieta@cimat.mx> and contributors"]
-version = "0.2.0"
+version = "0.2.1"
 
 [deps]
 FilePathsBase = "48062228-2e41-5def-b9a4-89aafe57970f"
@@ -9,7 +9,7 @@ NativeFileDialog_jll = "94d9ae2c-efc7-56f8-9a02-54c47b797961"
 
 [compat]
 FilePathsBase = "0.9"
-julia = "1.3"
+julia = "^1.6"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
diff --git a/src/wrapper.jl b/src/wrapper.jl
index 9457c1d..3c9838f 100644
--- a/src/wrapper.jl
+++ b/src/wrapper.jl
@@ -1,36 +1,36 @@
 function OpenDialog(filterlist::Cstring, defaultpath::Cstring)
     outpath = Ref(Ptr{UInt8}())
-    status = ccall((:NFD_OpenDialog, libnfd), NFDResult, (Cstring, Cstring, Ref{Ptr{UInt8}}), filterlist, defaultpath, outpath)
+    status = @ccall libnfd.NFD_OpenDialog(filterlist::Cstring, defaultpath::Cstring, outpath::Ref{Ptr{UInt8}})::NFDResult
     return status, outpath[]
 end
 
 function OpenDialogMultiple(filterlist::Cstring, defaultpath::Cstring)
     outpathset = Ref(NFDPathSet(C_NULL, C_NULL, 0))
-    status = ccall((:NFD_OpenDialogMultiple, libnfd), NFDResult, (Cstring, Cstring, Ref{NFDPathSet}), filterlist, defaultpath, outpathset)
+    status = @ccall libnfd.NFD_OpenDialogMultiple(filterlist::Cstring, defaultpath::Cstring, outpathset::Ref{NFDPathSet})::NFDResult
     return status, outpathset[]
 end
 
 function SaveDialog(filterlist::Cstring, defaultpath::Cstring)
     outpath = Ref(Ptr{UInt8}())
-    status = ccall((:NFD_SaveDialog, libnfd), NFDResult, (Cstring, Cstring, Ref{Ptr{UInt8}}), filterlist, defaultpath, outpath)
+    status = @ccall libnfd.NFD_SaveDialog(filterlist::Cstring, defaultpath::Cstring, outpath::Ref{Ptr{UInt8}})::NFDResult
     return status, outpath[]
 end
 
 function PickFolder(defaultpath::Cstring)
     outpath = Ref(Ptr{UInt8}())
-    status = ccall((:NFD_PickFolder, libnfd), NFDResult, (Cstring, Ref{Ptr{UInt8}}), defaultpath, outpath)
+    status = @ccall libnfd.NFD_PickFolder(defaultpath::Cstring, outpath::Ref{Ptr{UInt8}})::NFDResult
     return status, outpath[]
 end
 
 function GetError()
-    ccall((:NFD_GetError, libnfd), Cstring, ())
+    @ccall libnfd.NFD_GetError()::Cstring
 end
 
 function PathSetFree(pathset::NFDPathSet)
     refpathset = Ref(pathset)
-    ccall((:NFD_PathSet_Free, libnfd), Cvoid, (Ref{NFDPathSet},), refpathset)
+    @ccall libnfd.NFD_PathSet_Free(refpathset::Ref{NFDPathSet})::Cvoid
 end
 
 function Free(ptr)
-    ccall((:NFD_Free, libnfd), Cvoid, (Ptr{Cvoid},), ptr)
+    @ccall libnfd.NFD_Free(ptr::Ptr{Cvoid})::Cvoid
 end