diff --git a/autotest/build_exes.py b/autotest/build_exes.py
index d3070d2a..a3155529 100644
--- a/autotest/build_exes.py
+++ b/autotest/build_exes.py
@@ -11,7 +11,7 @@ except:
 
 os.environ["TRAVIS"] = "1"
 
-download_version = '2.0'
+download_version = '3.0'
 
 # path where downloaded executables will be extracted
 exe_pth = 'exe_download'
diff --git a/autotest/t503_test.py b/autotest/t503_test.py
index c53d0ab3..e787b092 100644
--- a/autotest/t503_test.py
+++ b/autotest/t503_test.py
@@ -11,8 +11,9 @@ def download_mf6_distribution():
     """
 
     # set url
-    dirname = 'mf6.0.3'
-    url = 'https://water.usgs.gov/ogw/modflow/{0}.zip'.format(dirname)
+    dirname = 'mf6.1.0'
+    url = 'https://water.usgs.gov/water-resources/software/' + \
+          'MODFLOW-6/{0}.zip'.format(dirname)
 
     # create folder for mf6 distribution download
     cpth = os.getcwd()
@@ -117,4 +118,3 @@ if __name__ == '__main__':
 
     # or to run just test, pass the example name into runmodel
     #runmodel('ex30-vilhelmsen-gf')
-    
\ No newline at end of file
diff --git a/binder/postBuild b/binder/postBuild
index 6cb3e17a..5312b19d 100644
--- a/binder/postBuild
+++ b/binder/postBuild
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-curl -L -o linux.zip https://github.com/MODFLOW-USGS/executables/releases/download/2.0/linux.zip?raw=true
+curl -L -o linux.zip https://github.com/MODFLOW-USGS/executables/releases/download/3.0/linux.zip?raw=true
 mkdir binaries
 unzip linux.zip -d binaries
 rm linux.zip