diff --git a/tests/apps/python/cnb/1/bin/build b/tests/apps/python/cnb/1/bin/build
index 24e91daceb9..29a58e38c3b 100755
--- a/tests/apps/python/cnb/1/bin/build
+++ b/tests/apps/python/cnb/1/bin/build
@@ -19,5 +19,5 @@ echo "TESTENV_1" >$bp_env_dir/TESTENV
 cat >"$layers_dir/launch.toml" <<EOL
 [[processes]]
 type = "web"
-command = "true"
+command = ["true"]
 EOL
diff --git a/tests/apps/python/cnb/1/buildpack.toml b/tests/apps/python/cnb/1/buildpack.toml
index 9c0af09cfc5..52f199a8b27 100644
--- a/tests/apps/python/cnb/1/buildpack.toml
+++ b/tests/apps/python/cnb/1/buildpack.toml
@@ -1,9 +1,6 @@
-api = "0.6"
+api = "0.9"
 
 [buildpack]
 id = "1"
 version = "0.1.0"
 name = "1 Packages Buildpack"
-
-[[stacks]]
-id = "heroku-22"
diff --git a/tests/apps/python/cnb/2/bin/build b/tests/apps/python/cnb/2/bin/build
index ee438976a28..02efc7d836c 100755
--- a/tests/apps/python/cnb/2/bin/build
+++ b/tests/apps/python/cnb/2/bin/build
@@ -25,5 +25,5 @@ echo "TESTENV_2" >$bp_env_dir/TESTENV
 cat >"$layers_dir/launch.toml" <<EOL
 [[processes]]
 type = "web"
-command = "true"
+command = ["true"]
 EOL
diff --git a/tests/apps/python/cnb/2/buildpack.toml b/tests/apps/python/cnb/2/buildpack.toml
index 93b5e29557f..d2c4f0b4f51 100644
--- a/tests/apps/python/cnb/2/buildpack.toml
+++ b/tests/apps/python/cnb/2/buildpack.toml
@@ -1,9 +1,6 @@
-api = "0.6"
+api = "0.9"
 
 [buildpack]
 id = "2"
 version = "0.1.0"
 name = "2 Packages Buildpack"
-
-[[stacks]]
-id = "heroku-22"