diff --git a/src/dependencies/CMakeLists.txt b/src/dependencies/CMakeLists.txt
index 87c0ac5..65d39b8 100644
--- a/src/dependencies/CMakeLists.txt
+++ b/src/dependencies/CMakeLists.txt
@@ -21,11 +21,11 @@ CPMAddPackage(
 # h5fortran
 CPMAddPackage(
   NAME h5fortran
-  VERSION 4.10.6
+  VERSION 4.5.0
   OPTIONS
     "CMAKE_POSITION_INDEPENDENT_CODE ON"
   GITHUB_REPOSITORY "geospace-code/h5fortran"
-  GIT_TAG "v4.10.6"
+  GIT_TAG "v4.5.0"
   EXCLUDE_FROM_ALL ON
 )
 
diff --git a/src/radtran/clima_radtran_types_create.f90 b/src/radtran/clima_radtran_types_create.f90
index d4b9708..b48b0af 100644
--- a/src/radtran/clima_radtran_types_create.f90
+++ b/src/radtran/clima_radtran_types_create.f90
@@ -1078,7 +1078,7 @@ subroutine read_h5_Xsection(filename, wavl, xs, err)
     
     call h%open(filename,'r')
     
-    if (.not. h%exist('log10xs')) then
+    if (.not. h%exists('log10xs')) then
       call h%close()
       err = filename//': dataset "log10xs" does not exist'
       return
@@ -1416,7 +1416,7 @@ subroutine check_h5_dataset(h, dataset, ndims, dtype, prefix, err)
     character(*), intent(in) :: prefix
     character(:), allocatable, intent(out) :: err
     
-    if (.not. h%exist(dataset)) then
+    if (.not. h%exists(dataset)) then
       err = prefix//': dataset "'//dataset//'" does not exist'
       return
     endif