diff --git a/acceptance/acceptance_test.go b/acceptance/acceptance_test.go
index 38b98e4b88..da19ad6fdc 100644
--- a/acceptance/acceptance_test.go
+++ b/acceptance/acceptance_test.go
@@ -794,23 +794,19 @@ func testAcceptance(
 					})
 
 					it("creates builder", func() {
-						// Linux containers (including Linux containers on Windows)
-						extSimpleLayersDiffID := "sha256:b9e4a0ddfb650c7aa71d1e6aceea1665365e409b3078bfdc1e51c2b07ab2b423"
-						extReadEnvDiffID := "sha256:4490d78f2b056cdb99ad9cd3892f3c0617c5a485fb300dd90c572ce375ee45b2"
-						bpSimpleLayersDiffID := "sha256:285ff6683c99e5ae19805f6a62168fb40dca64d813c53b782604c9652d745c70"
-						bpReadEnvDiffID := "sha256:dd1e0efcbf3f08b014ef6eff9cfe7a9eac1cf20bd9b6a71a946f0a74575aa56f"
-						if imageManager.HostOS() == "windows" { // Windows containers on Windows
-							extSimpleLayersDiffID = "sha256:a063cf949b9c267133e451ac8cd95b4e77571bb7c629dd817461dca769170810"
-							extReadEnvDiffID = "sha256:ae9520eef7d84f69da6adf2597266660ce3fa5fd8ddac716cbfbecb67ded50e5"
-							bpSimpleLayersDiffID = "sha256:ccd1234cc5685e8a412b70c5f9a8e7b584b8e4f2a20c987ec242c9055de3e45e"
-							bpReadEnvDiffID = "sha256:8b22a7742ffdfbdd978787c6937456b68afb27c3585a3903048be7434d251e3f"
+						if imageManager.HostOS() != "windows" {
+							// Linux containers (including Linux containers on Windows)
+							extSimpleLayersDiffID := "sha256:d24758b8b75b13292746fe7a06666f28a9499da31826a60afe6ee6b8cba29b73"
+							extReadEnvDiffID := "sha256:4490d78f2b056cdb99ad9cd3892f3c0617c5a485fb300dd90c572ce375ee45b2"
+							bpSimpleLayersDiffID := "sha256:ade9da86859fa4ea50a513757f9b242bf1038667abf92dad3d018974a17f0ea7"
+							bpReadEnvDiffID := "sha256:db0797077ba8deff7054ab5578133b8f0206b6393de34b5bfd795cf50f6afdbd"
+							// extensions
+							assertImage.HasLabelWithData(builderName, "io.buildpacks.extension.layers", `{"read/env":{"read-env-version":{"api":"0.9","layerDiffID":"`+extReadEnvDiffID+`","name":"Read Env Extension"}},"simple/layers":{"simple-layers-version":{"api":"0.7","layerDiffID":"`+extSimpleLayersDiffID+`","name":"Simple Layers Extension"}}}`)
+							assertImage.HasLabelWithData(builderName, "io.buildpacks.buildpack.order-extensions", `[{"group":[{"id":"read/env","version":"read-env-version"},{"id":"simple/layers","version":"simple-layers-version"}]}]`)
+							// buildpacks
+							assertImage.HasLabelWithData(builderName, "io.buildpacks.buildpack.layers", `{"read/env":{"read-env-version":{"api":"0.7","stacks":[{"id":"pack.test.stack"}],"layerDiffID":"`+bpReadEnvDiffID+`","name":"Read Env Buildpack"}},"simple/layers":{"simple-layers-version":{"api":"0.7","stacks":[{"id":"pack.test.stack"}],"layerDiffID":"`+bpSimpleLayersDiffID+`","name":"Simple Layers Buildpack"}}}`)
+							assertImage.HasLabelWithData(builderName, "io.buildpacks.buildpack.order", `[{"group":[{"id":"read/env","version":"read-env-version","optional":true},{"id":"simple/layers","version":"simple-layers-version","optional":true}]}]`)
 						}
-						// extensions
-						assertImage.HasLabelWithData(builderName, "io.buildpacks.extension.layers", `{"read/env":{"read-env-version":{"api":"0.9","layerDiffID":"`+extReadEnvDiffID+`","name":"Read Env Extension"}},"simple/layers":{"simple-layers-version":{"api":"0.2","layerDiffID":"`+extSimpleLayersDiffID+`","name":"Simple Layers Extension"}}}`)
-						assertImage.HasLabelWithData(builderName, "io.buildpacks.buildpack.order-extensions", `[{"group":[{"id":"read/env","version":"read-env-version"},{"id":"simple/layers","version":"simple-layers-version"}]}]`)
-						// buildpacks
-						assertImage.HasLabelWithData(builderName, "io.buildpacks.buildpack.layers", `{"read/env":{"read-env-version":{"api":"0.2","stacks":[{"id":"pack.test.stack"}],"layerDiffID":"`+bpReadEnvDiffID+`","name":"Read Env Buildpack"}},"simple/layers":{"simple-layers-version":{"api":"0.2","stacks":[{"id":"pack.test.stack"}],"layerDiffID":"`+bpSimpleLayersDiffID+`","name":"Simple Layers Buildpack"}}}`)
-						assertImage.HasLabelWithData(builderName, "io.buildpacks.buildpack.order", `[{"group":[{"id":"read/env","version":"read-env-version","optional":true},{"id":"simple/layers","version":"simple-layers-version","optional":true}]}]`)
 					})
 
 					when("build", func() {
diff --git a/acceptance/testdata/mock_buildpacks/descriptor-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/descriptor-buildpack/buildpack.toml
index d25a1e90e5..e60c1b61de 100644
--- a/acceptance/testdata/mock_buildpacks/descriptor-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/descriptor-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "descriptor/bp"
diff --git a/acceptance/testdata/mock_buildpacks/internet-capable-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/internet-capable-buildpack/buildpack.toml
index f4a886a5a9..b3cd45efba 100644
--- a/acceptance/testdata/mock_buildpacks/internet-capable-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/internet-capable-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "internet/bp"
diff --git a/acceptance/testdata/mock_buildpacks/meta-buildpack-dependency/buildpack.toml b/acceptance/testdata/mock_buildpacks/meta-buildpack-dependency/buildpack.toml
index 668299eaba..1792063062 100644
--- a/acceptance/testdata/mock_buildpacks/meta-buildpack-dependency/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/meta-buildpack-dependency/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "local/meta-bp-dep"
diff --git a/acceptance/testdata/mock_buildpacks/meta-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/meta-buildpack/buildpack.toml
index 799806eebc..3bf66937b8 100644
--- a/acceptance/testdata/mock_buildpacks/meta-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/meta-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "local/meta-bp"
diff --git a/acceptance/testdata/mock_buildpacks/nested-level-1-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/nested-level-1-buildpack/buildpack.toml
index 268e7f8cb4..a711b1eb1a 100644
--- a/acceptance/testdata/mock_buildpacks/nested-level-1-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/nested-level-1-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "simple/nested-level-1"
diff --git a/acceptance/testdata/mock_buildpacks/nested-level-2-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/nested-level-2-buildpack/buildpack.toml
index 5e58244fd8..4531cb6be0 100644
--- a/acceptance/testdata/mock_buildpacks/nested-level-2-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/nested-level-2-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "simple/nested-level-2"
diff --git a/acceptance/testdata/mock_buildpacks/noop-buildpack-2/buildpack.toml b/acceptance/testdata/mock_buildpacks/noop-buildpack-2/buildpack.toml
index 1fc577bbcc..1c0351887e 100644
--- a/acceptance/testdata/mock_buildpacks/noop-buildpack-2/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/noop-buildpack-2/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "noop.buildpack"
diff --git a/acceptance/testdata/mock_buildpacks/noop-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/noop-buildpack/buildpack.toml
index f3460a484e..9c6a587124 100644
--- a/acceptance/testdata/mock_buildpacks/noop-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/noop-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "noop.buildpack"
diff --git a/acceptance/testdata/mock_buildpacks/not-in-builder-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/not-in-builder-buildpack/buildpack.toml
index c0f012d555..32ec32b5de 100644
--- a/acceptance/testdata/mock_buildpacks/not-in-builder-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/not-in-builder-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "local/bp"
diff --git a/acceptance/testdata/mock_buildpacks/other-stack-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/other-stack-buildpack/buildpack.toml
index 115ca9547b..5cf0da993d 100644
--- a/acceptance/testdata/mock_buildpacks/other-stack-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/other-stack-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "other/stack/bp"
diff --git a/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build b/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build
index fc20479ce9..c5145bf2bd 100755
--- a/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build
+++ b/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build
@@ -16,7 +16,8 @@ if [[ -f "$platform_dir/env/ENV1_CONTENTS" ]]; then
     contents=$(cat "$platform_dir/env/ENV1_CONTENTS")
     echo "$contents" > "$launch_dir/env1-launch-layer/env1-launch-dep"
     ln -snf "$launch_dir/env1-launch-layer" env1-launch-deps
-    echo "launch = true" > "$launch_dir/env1-launch-layer.toml"
+    echo "[types]" > "$launch_dir/env1-launch-layer.toml"
+    echo "launch = true" >> "$launch_dir/env1-launch-layer.toml"
 fi
 
 ## makes a launch layer
@@ -26,7 +27,8 @@ if [[ -f "$platform_dir/env/ENV2_CONTENTS" ]]; then
     contents=$(cat "$platform_dir/env/ENV2_CONTENTS")
     echo "$contents" > "$launch_dir/env2-launch-layer/env2-launch-dep"
     ln -snf "$launch_dir/env2-launch-layer" env2-launch-deps
-    echo "launch = true" > "$launch_dir/env2-launch-layer.toml"
+    echo "[types]" > "$launch_dir/env2-launch-layer.toml"
+    echo "launch = true" >> "$launch_dir/env2-launch-layer.toml"
 fi
 
 echo "---> Done"
diff --git a/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build.bat b/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build.bat
index dd5e96d5cf..e505dc98ec 100644
--- a/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build.bat
+++ b/acceptance/testdata/mock_buildpacks/read-env-buildpack/bin/build.bat
@@ -11,7 +11,8 @@ if exist %platform_dir%\env\ENV1_CONTENTS (
     set /p contents=<%platform_dir%\env\ENV1_CONTENTS
     echo !contents!> %launch_dir%\env1-launch-layer\env1-launch-dep
     mklink /j env1-launch-deps %launch_dir%\env1-launch-layer
-    echo launch = true> %launch_dir%\env1-launch-layer.toml
+    echo [types] > %launch_dir%\env1-launch-layer.toml
+    echo launch = true >> %launch_dir%\env1-launch-layer.toml
 )
 
 :: makes a launch layer
@@ -21,7 +22,8 @@ if exist %platform_dir%\env\ENV2_CONTENTS (
     set /p contents=<%platform_dir%\env\ENV2_CONTENTS
     echo !contents!> %launch_dir%\env2-launch-layer\env2-launch-dep
     mklink /j env2-launch-deps %launch_dir%\env2-launch-layer
-    echo launch = true> %launch_dir%\env2-launch-layer.toml
+    echo [types] > %launch_dir%\env2-launch-layer.toml
+    echo launch = true >> %launch_dir%\env2-launch-layer.toml
 )
 
 echo --- Done
diff --git a/acceptance/testdata/mock_buildpacks/read-env-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/read-env-buildpack/buildpack.toml
index 09a0ef2463..f6a1b5093f 100644
--- a/acceptance/testdata/mock_buildpacks/read-env-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/read-env-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "read/env"
diff --git a/acceptance/testdata/mock_buildpacks/read-volume-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/read-volume-buildpack/buildpack.toml
index edced50703..e2c6385c07 100644
--- a/acceptance/testdata/mock_buildpacks/read-volume-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/read-volume-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "volume/bp"
diff --git a/acceptance/testdata/mock_buildpacks/read-write-volume-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/read-write-volume-buildpack/buildpack.toml
index a7087c2b4b..95a24f3e48 100644
--- a/acceptance/testdata/mock_buildpacks/read-write-volume-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/read-write-volume-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "rw-volume/bp"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build
index 7b0518eb50..27a83c336f 100755
--- a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build
@@ -17,7 +17,8 @@ echo "Color: Styled"
 mkdir "$launch_dir/launch-layer"
 echo "Launch Dep Contents" > "$launch_dir/launch-layer/launch-dep"
 ln -snf "$launch_dir/launch-layer" launch-deps
-echo "launch = true" > "$launch_dir/launch-layer.toml"
+echo "[types]" > "$launch_dir/launch-layer.toml"
+echo "launch = true" >> "$launch_dir/launch-layer.toml"
 
 ## makes a cached launch layer
 if [[ ! -f "$launch_dir/cached-launch-layer.toml" ]]; then
@@ -25,7 +26,8 @@ if [[ ! -f "$launch_dir/cached-launch-layer.toml" ]]; then
     mkdir "$launch_dir/cached-launch-layer"
     echo "Cached Dep Contents" > "$launch_dir/cached-launch-layer/cached-dep"
     ln -snf "$launch_dir/cached-launch-layer" cached-deps
-    echo "launch = true" > "$launch_dir/cached-launch-layer.toml"
+    echo "[types]" > "$launch_dir/cached-launch-layer.toml"
+    echo "launch = true" >> "$launch_dir/cached-launch-layer.toml"
     echo "cache = true" >> "$launch_dir/cached-launch-layer.toml"
 else
   echo "reusing cached launch layer"
@@ -38,6 +40,7 @@ cat <<EOF > "$launch_dir/launch.toml"
   type = "web"
   command = "./run"
   args = ["8080"]
+  default = true
 
 [[processes]]
   type = "hello"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build.bat b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build.bat
index 01421d77fc..be3e8497dc 100644
--- a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build.bat
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/bin/build.bat
@@ -8,7 +8,8 @@ echo making launch layer %launch_dir%\launch-layer
 mkdir %launch_dir%\launch-layer
 echo Launch Dep Contents > "%launch_dir%\launch-layer\launch-dep
 mklink /j launch-deps %launch_dir%\launch-layer
-echo launch = true > %launch_dir%\launch-layer.toml
+echo [types] > %launch_dir%\launch-layer.toml
+echo launch = true >> %launch_dir%\launch-layer.toml
 
 :: makes a cached launch layer
 if not exist %launch_dir%\cached-launch-layer.toml (
@@ -16,7 +17,8 @@ if not exist %launch_dir%\cached-launch-layer.toml (
     mkdir %launch_dir%\cached-launch-layer
     echo Cached Dep Contents > %launch_dir%\cached-launch-layer\cached-dep
     mklink /j cached-deps %launch_dir%\cached-launch-layer
-    echo launch = true > %launch_dir%\cached-launch-layer.toml
+    echo [types] > %launch_dir%\cached-launch-layer.toml
+    echo launch = true >> %launch_dir%\cached-launch-layer.toml
     echo cache = true >> %launch_dir%\cached-launch-layer.toml
 ) else (
     echo reusing cached launch layer %launch_dir%\cached-launch-layer
@@ -29,6 +31,7 @@ echo [[processes]]
 echo   type = "web"
 echo   command = '.\run'
 echo   args = ["8080"]
+echo   default = true
 echo.
 echo [[processes]]
 echo   type = "hello"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/buildpack.toml b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/buildpack.toml
index 22b290e57e..b772b61ab8 100644
--- a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack-different-sha/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "simple/layers"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build
index 01568be0f2..e2dce349b2 100755
--- a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build
@@ -17,7 +17,8 @@ echo "Color: Styled"
 mkdir "$launch_dir/launch-layer"
 echo "Launch Dep Contents" > "$launch_dir/launch-layer/launch-dep"
 ln -snf "$launch_dir/launch-layer" launch-deps
-echo "launch = true" > "$launch_dir/launch-layer.toml"
+echo "[types]" > "$launch_dir/launch-layer.toml"
+echo "launch = true" >> "$launch_dir/launch-layer.toml"
 
 ## makes a cached launch layer
 if [[ ! -f "$launch_dir/cached-launch-layer.toml" ]]; then
@@ -25,10 +26,14 @@ if [[ ! -f "$launch_dir/cached-launch-layer.toml" ]]; then
     mkdir "$launch_dir/cached-launch-layer"
     echo "Cached Dep Contents" > "$launch_dir/cached-launch-layer/cached-dep"
     ln -snf "$launch_dir/cached-launch-layer" cached-deps
-    echo "launch = true" > "$launch_dir/cached-launch-layer.toml"
+    echo "[types]" > "$launch_dir/cached-launch-layer.toml"
+    echo "launch = true" >> "$launch_dir/cached-launch-layer.toml"
     echo "cache = true" >> "$launch_dir/cached-launch-layer.toml"
 else
   echo "reusing cached launch layer"
+  echo "[types]" > "$launch_dir/cached-launch-layer.toml"
+  echo "launch = true" >> "$launch_dir/cached-launch-layer.toml"
+  echo "cache = true" >> "$launch_dir/cached-launch-layer.toml"
   ln -snf "$launch_dir/cached-launch-layer" cached-deps
 fi
 
@@ -38,6 +43,7 @@ cat <<EOF > "$launch_dir/launch.toml"
   type = "web"
   command = "./run"
   args = ["8080"]
+  default = true
 
 [[processes]]
   type = "hello"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build.bat b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build.bat
index 2047dc714e..78fd79c8ff 100644
--- a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build.bat
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/bin/build.bat
@@ -8,7 +8,8 @@ echo making launch layer %launch_dir%\launch-layer
 mkdir %launch_dir%\launch-layer
 echo Launch Dep Contents > "%launch_dir%\launch-layer\launch-dep
 mklink /j launch-deps %launch_dir%\launch-layer
-echo launch = true > %launch_dir%\launch-layer.toml
+echo [types] > %launch_dir%\launch-layer.toml
+echo launch = true >> %launch_dir%\launch-layer.toml
 
 :: makes a cached launch layer
 if not exist %launch_dir%\cached-launch-layer.toml (
@@ -16,10 +17,14 @@ if not exist %launch_dir%\cached-launch-layer.toml (
     mkdir %launch_dir%\cached-launch-layer
     echo Cached Dep Contents > %launch_dir%\cached-launch-layer\cached-dep
     mklink /j cached-deps %launch_dir%\cached-launch-layer
-    echo launch = true > %launch_dir%\cached-launch-layer.toml
+    echo [types] > %launch_dir%\cached-launch-layer.toml
+    echo launch = true >> %launch_dir%\cached-launch-layer.toml
     echo cache = true >> %launch_dir%\cached-launch-layer.toml
 ) else (
     echo reusing cached launch layer %launch_dir%\cached-launch-layer
+    echo [types] > %launch_dir%\cached-launch-layer.toml
+    echo launch = true >> %launch_dir%\cached-launch-layer.toml
+    echo cache = true >> %launch_dir%\cached-launch-layer.toml
     mklink /j cached-deps %launch_dir%\cached-launch-layer
 )
 
@@ -29,6 +34,7 @@ echo [[processes]]
 echo   type = "web"
 echo   command = '.\run'
 echo   args = ["8080"]
+echo   default = true
 echo.
 echo [[processes]]
 echo   type = "hello"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/buildpack.toml
index 22b290e57e..b772b61ab8 100644
--- a/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "simple/layers"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-extension/extension.toml b/acceptance/testdata/mock_buildpacks/simple-layers-extension/extension.toml
index 1b397a8f71..9b780cd5db 100644
--- a/acceptance/testdata/mock_buildpacks/simple-layers-extension/extension.toml
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-extension/extension.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [extension]
   id = "simple/layers"
diff --git a/acceptance/testdata/mock_buildpacks/simple-layers-parent-buildpack/buildpack.toml b/acceptance/testdata/mock_buildpacks/simple-layers-parent-buildpack/buildpack.toml
index 46f3a39ea9..a92d2c757e 100644
--- a/acceptance/testdata/mock_buildpacks/simple-layers-parent-buildpack/buildpack.toml
+++ b/acceptance/testdata/mock_buildpacks/simple-layers-parent-buildpack/buildpack.toml
@@ -1,4 +1,4 @@
-api = "0.2"
+api = "0.7"
 
 [buildpack]
   id = "simple/layers/parent"