diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4018ac..7768286 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION "3.14")
 cmake_policy(SET CMP0148 OLD) # To suppress a warning emerging from scikit-build
 
-project(Clima LANGUAGES Fortran C VERSION "0.4.5")
+project(Clima LANGUAGES Fortran C VERSION "0.4.6")
 
 set(CMAKE_Fortran_MODULE_DIRECTORY "${CMAKE_BINARY_DIR}/modules")
 
diff --git a/clima/cython/AdiabatClimate.pyx b/clima/cython/AdiabatClimate.pyx
index 1c72d09..8a02dc2 100644
--- a/clima/cython/AdiabatClimate.pyx
+++ b/clima/cython/AdiabatClimate.pyx
@@ -29,8 +29,8 @@ cdef class AdiabatClimate:
       raise ClimaException('The "__init__" method of AdiabatClimate has not been called.')
     PyObject_GenericSetAttr(self, name, value)
 
-  def __init__(self, species_file = None, settings_file = None, 
-                     flux_file = None, data_dir = None, cbool double_radiative_grid = True):           
+  def __init__(self, str species_file, str settings_file, 
+                     str flux_file, data_dir = None, cbool double_radiative_grid = True):           
     """Initializes `AdiabatClimate`
 
     Parameters
@@ -379,7 +379,7 @@ cdef class AdiabatClimate:
     if len(err.strip()) > 0:
       raise ClimaException(err.decode("utf-8").strip())
 
-  def out2atmosphere_txt(self, filename, ndarray[double, ndim=1] eddy, cbool overwrite = False, cbool clip = True):
+  def out2atmosphere_txt(self, str filename, ndarray[double, ndim=1] eddy, cbool overwrite = False, cbool clip = True):
     """Saves state of the atmosphere to a file.
 
     Parameters
diff --git a/src/adiabat/clima_adiabat.f90 b/src/adiabat/clima_adiabat.f90
index 45e5191..99d1cea 100644
--- a/src/adiabat/clima_adiabat.f90
+++ b/src/adiabat/clima_adiabat.f90
@@ -950,11 +950,13 @@ subroutine AdiabatClimate_to_regular_grid(self, err)
   end subroutine
 
   subroutine AdiabatClimate_out2atmosphere_txt(self, filename, eddy, overwrite, clip, err)
+    use futils, only: FileCloser
     class(AdiabatClimate), target, intent(inout) :: self
     character(len=*), intent(in) :: filename
     real(dp), intent(in) :: eddy(:)
     logical, intent(in) :: overwrite, clip
     character(:), allocatable, intent(out) :: err
+    type(FileCloser) :: file
     
     character(len=100) :: tmp
     integer :: io, i, j
@@ -969,12 +971,14 @@ subroutine AdiabatClimate_out2atmosphere_txt(self, filename, eddy, overwrite, cl
     
     if (overwrite) then
       open(2, file=filename, form='formatted', status='replace', iostat=io)
+      file%unit = 2
       if (io /= 0) then
         err = "Unable to overwrite file "//trim(filename)
         return
       endif
     else
       open(2, file=filename, form='formatted', status='new', iostat=io)
+      file%unit = 2
       if (io /= 0) then
         err = "Unable to create file "//trim(filename)//" because it already exists"
         return
@@ -1012,8 +1016,6 @@ subroutine AdiabatClimate_out2atmosphere_txt(self, filename, eddy, overwrite, cl
       enddo
     enddo
     
-    close(2)
-    
   end subroutine
 
   !> For considering a tidally locked planet. This function computes key parameters for
diff --git a/src/dependencies/CMakeLists.txt b/src/dependencies/CMakeLists.txt
index 0471ba0..4a9dba0 100644
--- a/src/dependencies/CMakeLists.txt
+++ b/src/dependencies/CMakeLists.txt
@@ -22,9 +22,9 @@ CPMAddPackage(
 # futils
 CPMAddPackage(
   NAME futils
-  VERSION 0.1.9
+  VERSION 0.1.11
   GITHUB_REPOSITORY "Nicholaswogan/futils"
-  GIT_TAG "v0.1.9"
+  GIT_TAG "v0.1.11"
   EXCLUDE_FROM_ALL ON
 )