diff --git a/tests/test_config.py b/tests/test_config.py
index a37635b4c3309cc263ea1d5a0927c65178c4ff15..2beac9fe8d18cf3c6ba47e8f47227f02c5b6f025 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -217,7 +217,7 @@ def test_rt_wrapper_cache_responds_to_external_credential_changes(rt_environ):
     assert rt1 is not rt2
 
 def test_rt_wrapper_has_cache(tmp_path):
-    with update_environ(XDG_CACHE_DIR=tmp_path), update_umask(0o002):
+    with update_environ(XDG_CACHE_HOME=tmp_path), update_umask(0o002):
         config = config_mod.Config()
         rt = config.rt_wrapper(None, testutil.RTClient)
         rt.exists(1)
@@ -229,7 +229,7 @@ def test_rt_wrapper_has_cache(tmp_path):
 
 def test_rt_wrapper_without_cache(tmp_path):
     tmp_path.chmod(0)
-    with update_environ(XDG_CACHE_DIR=tmp_path):
+    with update_environ(XDG_CACHE_HOME=tmp_path):
         config = config_mod.Config()
         rt = config.rt_wrapper(None, testutil.RTClient)
     tmp_path.chmod(0o600)
@@ -237,7 +237,7 @@ def test_rt_wrapper_without_cache(tmp_path):
 
 def test_cache_mkdir(tmp_path):
     expected = tmp_path / 'TESTcache'
-    with update_environ(XDG_CACHE_DIR=tmp_path):
+    with update_environ(XDG_CACHE_HOME=tmp_path):
         config = config_mod.Config()
         cache_path = config.cache_dir_path(expected.name)
     assert cache_path == tmp_path / 'TESTcache'
@@ -246,7 +246,7 @@ def test_cache_mkdir(tmp_path):
 def test_cache_mkdir_parent(tmp_path):
     xdg_cache_dir = tmp_path / 'xdgcache'
     expected = xdg_cache_dir / 'conservancy_beancount'
-    with update_environ(XDG_CACHE_DIR=xdg_cache_dir):
+    with update_environ(XDG_CACHE_HOME=xdg_cache_dir):
         config = config_mod.Config()
         cache_path = config.cache_dir_path(expected.name)
     assert cache_path == expected
@@ -254,7 +254,7 @@ def test_cache_mkdir_parent(tmp_path):
 
 def test_cache_mkdir_from_home(tmp_path):
     expected = tmp_path / '.cache' / 'TESTcache'
-    with update_environ(HOME=tmp_path, XDG_CACHE_DIR=None):
+    with update_environ(HOME=tmp_path, XDG_CACHE_HOME=None):
         config = config_mod.Config()
         cache_path = config.cache_dir_path(expected.name)
     assert cache_path == expected
@@ -263,7 +263,7 @@ def test_cache_mkdir_from_home(tmp_path):
 def test_cache_mkdir_exists_ok(tmp_path):
     expected = tmp_path / 'TESTcache'
     expected.mkdir()
-    with update_environ(XDG_CACHE_DIR=tmp_path):
+    with update_environ(XDG_CACHE_HOME=tmp_path):
         config = config_mod.Config()
         cache_path = config.cache_dir_path(expected.name)
     assert cache_path == expected
@@ -271,7 +271,7 @@ def test_cache_mkdir_exists_ok(tmp_path):
 def test_cache_path_conflict(tmp_path):
     extant_path = tmp_path / 'TESTcache'
     extant_path.touch()
-    with update_environ(XDG_CACHE_DIR=tmp_path):
+    with update_environ(XDG_CACHE_HOME=tmp_path):
         config = config_mod.Config()
         cache_path = config.cache_dir_path(extant_path.name)
     assert cache_path is None
@@ -279,7 +279,7 @@ def test_cache_path_conflict(tmp_path):
 
 def test_cache_path_parent_conflict(tmp_path):
     (tmp_path / '.cache').touch()
-    with update_environ(HOME=tmp_path, XDG_CACHE_DIR=None):
+    with update_environ(HOME=tmp_path, XDG_CACHE_HOME=None):
         config = config_mod.Config()
         assert config.cache_dir_path('TESTcache') is None