diff --git a/src/cmake_language_server/api.py b/src/cmake_language_server/api.py
index 5ee8876..0c9ed7c 100644
--- a/src/cmake_language_server/api.py
+++ b/src/cmake_language_server/api.py
@@ -50,7 +50,8 @@ class API(object):
 
         proc = subprocess.run([self._cmake, self._build],
                               universal_newlines=True,
-                              capture_output=True)
+                              stdout=subprocess.PIPE,
+                              stderr=subprocess.PIPE)
         self.query_json.unlink()
         self.query_json.parent.rmdir()
         if proc.returncode != 0:
@@ -133,7 +134,8 @@ endforeach()
             p = subprocess.run([self._cmake, '-P', tmplist],
                                cwd=cmake_files['paths']['source'],
                                universal_newlines=True,
-                               capture_output=True)
+                               stdout=subprocess.PIPE,
+                               stderr=subprocess.PIPE)
             if p.returncode != 0:
                 return
 
diff --git a/tests/conftest.py b/tests/conftest.py
index b042aad..598524d 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,18 +1,16 @@
-import logging
-
 import pytest
 
 
 @pytest.fixture()
 def cmake_build(shared_datadir):
-    from subprocess import run
+    from subprocess import run, PIPE
     source = shared_datadir / 'cmake'
     build = source / 'build'
     build.mkdir()
-    p = run(['cmake', '-S', source, '-B', build],
-            check=True,
-            capture_output=True,
-            universal_newlines=True)
-    logging.debug(p.stdout)
-    logging.debug(p.stderr)
+    run(['cmake', source],
+        check=True,
+        cwd=build,
+        stdout=PIPE,
+        stderr=PIPE,
+        universal_newlines=True)
     yield build
diff --git a/tests/test_api.py b/tests/test_api.py
index e46d684..44dadf1 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -43,8 +43,9 @@ def test_parse_commands(cmake_build):
     api.parse_doc()
 
     p = subprocess.run(['cmake', '--help-command-list'],
-                       capture_output=True,
-                       universal_newlines=True)
+                       universal_newlines=True,
+                       stdout=subprocess.PIPE,
+                       stderr=subprocess.PIPE)
     commands = p.stdout.strip().split('\n')
 
     for command in commands:
@@ -59,8 +60,9 @@ def test_parse_variables(cmake_build):
     api.parse_doc()
 
     p = subprocess.run(['cmake', '--help-variable-list'],
-                       capture_output=True,
-                       universal_newlines=True)
+                       universal_newlines=True,
+                       stdout=subprocess.PIPE,
+                       stderr=subprocess.PIPE)
     variables = p.stdout.strip().split('\n')
 
     for variable in variables: