diff --git a/.gitmodules b/.gitmodules
index 448fc97..e02f407 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -157,6 +157,52 @@
 	shallow = true
 	fetchRecurseSubmodules = false
 
+# sky130_fd_sc_lp
+[submodule "libraries/sky130_fd_sc_lp/latest"]
+	path = libraries/sky130_fd_sc_lp/latest
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_lp.git
+	branch = master
+	shallow = true
+	fetchRecurseSubmodules = true
+[submodule "libraries/sky130_fd_sc_lp/v0.0.2"]
+	path = libraries/sky130_fd_sc_lp/v0.0.2
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_lp.git
+	branch = branch-0.0.2
+	shallow = true
+	fetchRecurseSubmodules = false
+[submodule "libraries/sky130_fd_sc_lp/v0.0.1"]
+	path = libraries/sky130_fd_sc_lp/v0.0.1
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_lp.git
+	branch = branch-0.0.1
+	shallow = true
+	fetchRecurseSubmodules = false
+
+# sky130_fd_sc_hvl
+[submodule "libraries/sky130_fd_sc_hvl/latest"]
+	path = libraries/sky130_fd_sc_hvl/latest
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_hvl.git
+	branch = master
+	shallow = true
+	fetchRecurseSubmodules = true
+[submodule "libraries/sky130_fd_sc_hvl/v0.0.3"]
+	path = libraries/sky130_fd_sc_hvl/v0.0.3
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_hvl.git
+	branch = branch-0.0.3
+	shallow = true
+	fetchRecurseSubmodules = false
+[submodule "libraries/sky130_fd_sc_hvl/v0.0.2"]
+	path = libraries/sky130_fd_sc_hvl/v0.0.2
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_hvl.git
+	branch = branch-0.0.2
+	shallow = true
+	fetchRecurseSubmodules = false
+[submodule "libraries/sky130_fd_sc_hvl/v0.0.1"]
+	path = libraries/sky130_fd_sc_hvl/v0.0.1
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_sc_hvl.git
+	branch = branch-0.0.1
+	shallow = true
+	fetchRecurseSubmodules = false
+
 # sky130_fd_io
 [submodule "libraries/sky130_fd_io/latest"]
 	path = libraries/sky130_fd_io/latest
diff --git a/libraries/sky130_fd_sc_hvl/latest b/libraries/sky130_fd_sc_hvl/latest
new file mode 160000
index 0000000..4fd4f85
--- /dev/null
+++ b/libraries/sky130_fd_sc_hvl/latest
@@ -0,0 +1 @@
+Subproject commit 4fd4f858d16c558a6a488b200649e909bb4dd800
diff --git a/libraries/sky130_fd_sc_hvl/v0.0.1 b/libraries/sky130_fd_sc_hvl/v0.0.1
new file mode 160000
index 0000000..c86542d
--- /dev/null
+++ b/libraries/sky130_fd_sc_hvl/v0.0.1
@@ -0,0 +1 @@
+Subproject commit c86542d2d658a2fa689b2266d4e4e227a660fcc9
diff --git a/libraries/sky130_fd_sc_hvl/v0.0.2 b/libraries/sky130_fd_sc_hvl/v0.0.2
new file mode 160000
index 0000000..fc47788
--- /dev/null
+++ b/libraries/sky130_fd_sc_hvl/v0.0.2
@@ -0,0 +1 @@
+Subproject commit fc477882eaf986336a069c62b70a67d45487a4d7
diff --git a/libraries/sky130_fd_sc_hvl/v0.0.3 b/libraries/sky130_fd_sc_hvl/v0.0.3
new file mode 160000
index 0000000..4fd4f85
--- /dev/null
+++ b/libraries/sky130_fd_sc_hvl/v0.0.3
@@ -0,0 +1 @@
+Subproject commit 4fd4f858d16c558a6a488b200649e909bb4dd800
diff --git a/libraries/sky130_fd_sc_lp/latest b/libraries/sky130_fd_sc_lp/latest
new file mode 160000
index 0000000..e2c1e06
--- /dev/null
+++ b/libraries/sky130_fd_sc_lp/latest
@@ -0,0 +1 @@
+Subproject commit e2c1e0646999163d35ea7b2521c3ec5c28633e63
diff --git a/libraries/sky130_fd_sc_lp/v0.0.1 b/libraries/sky130_fd_sc_lp/v0.0.1
new file mode 160000
index 0000000..9ade3f1
--- /dev/null
+++ b/libraries/sky130_fd_sc_lp/v0.0.1
@@ -0,0 +1 @@
+Subproject commit 9ade3f192eba16db62624174859690211a660806
diff --git a/libraries/sky130_fd_sc_lp/v0.0.2 b/libraries/sky130_fd_sc_lp/v0.0.2
new file mode 160000
index 0000000..e2c1e06
--- /dev/null
+++ b/libraries/sky130_fd_sc_lp/v0.0.2
@@ -0,0 +1 @@
+Subproject commit e2c1e0646999163d35ea7b2521c3ec5c28633e63