diff --git a/.gitignore b/.gitignore
index 349b1c4a..ed77ebe6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-Manifest.toml
+Manifest*.toml
 
 *.jl.cov
 *.jl.*.cov
diff --git a/Project.toml b/Project.toml
index ccaaad35..3557b725 100644
--- a/Project.toml
+++ b/Project.toml
@@ -2,6 +2,9 @@ name = "GPUArrays"
 uuid = "0c68f7d7-f131-5f86-a1c3-88cf8149b2d7"
 version = "11.5.0"
 
+[workspace]
+projects = ["lib/GPUArraysCore", "lib/JLArrays", "test", "docs"]
+
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 GPUArraysCore = "46192b85-c4d5-4398-a991-12ede77f4527"
diff --git a/lib/GPUArraysCore/Manifest.toml b/lib/GPUArraysCore/Manifest.toml
deleted file mode 100644
index ca31d72b..00000000
--- a/lib/GPUArraysCore/Manifest.toml
+++ /dev/null
@@ -1,14 +0,0 @@
-# This file is machine-generated - editing it directly is not advised
-
-[[Adapt]]
-deps = ["LinearAlgebra"]
-git-tree-sha1 = "af92965fb30777147966f58acb05da51c5616b5f"
-uuid = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
-version = "3.3.3"
-
-[[Libdl]]
-uuid = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
-
-[[LinearAlgebra]]
-deps = ["Libdl"]
-uuid = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
diff --git a/test/Project.toml b/test/Project.toml
index 8b5927ae..7e816ed5 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -1,5 +1,6 @@
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
+GPUArrays = "0c68f7d7-f131-5f86-a1c3-88cf8149b2d7"
 JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 JLD2 = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
 KernelAbstractions = "63c18a36-062a-441e-b654-da1e3ab1ce7c"