diff --git a/.gitmodules b/.gitmodules
index 3a0a8fa52..98e15c7b2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -156,3 +156,27 @@
 	branch = branch-0.1.0
 	shallow = true
 	fetchRecurseSubmodules = false
+
+# sky130_fd_bd_sram
+[submodule "libraries/sky130_fd_bd_sram/latest"]
+	path = libraries/sky130_fd_bd_sram/latest
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_bd_sram.git
+	shallow = true
+	fetchRecurseSubmodules = false
+[submodule "libraries/sky130_fd_bd_sram/v0.0.1"]
+	path = libraries/sky130_fd_bd_sram/v0.0.1
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_fd_bd_sram.git
+	shallow = true
+	fetchRecurseSubmodules = false
+
+# sky130_openram_ip_sram
+[submodule "ip/sky130_openram_ip_sram/latest"]
+	path = ip/sky130_openram_ip_sram/latest
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/ip/sky130_openram_ip_sram
+	shallow = true
+	fetchRecurseSubmodules = false
+[submodule "ip/sky130_openram_ip_sram/v0.0.1"]
+	path = ip/sky130_openram_ip_sram/v0.0.1
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/ip/sky130_openram_ip_sram
+	shallow = true
+	fetchRecurseSubmodules = false
diff --git a/ip/sky130_openram_ip_sram/latest b/ip/sky130_openram_ip_sram/latest
new file mode 160000
index 000000000..c069296d4
--- /dev/null
+++ b/ip/sky130_openram_ip_sram/latest
@@ -0,0 +1 @@
+Subproject commit c069296d44f95d3d9aff88798ce2060bfad2763b
diff --git a/ip/sky130_openram_ip_sram/v0.0.1 b/ip/sky130_openram_ip_sram/v0.0.1
new file mode 160000
index 000000000..c069296d4
--- /dev/null
+++ b/ip/sky130_openram_ip_sram/v0.0.1
@@ -0,0 +1 @@
+Subproject commit c069296d44f95d3d9aff88798ce2060bfad2763b
diff --git a/libraries/sky130_fd_bd_sram/latest b/libraries/sky130_fd_bd_sram/latest
new file mode 160000
index 000000000..d95f31543
--- /dev/null
+++ b/libraries/sky130_fd_bd_sram/latest
@@ -0,0 +1 @@
+Subproject commit d95f31543f141348a7baaf2be1d42de5479daf7e
diff --git a/libraries/sky130_fd_bd_sram/v0.0.1 b/libraries/sky130_fd_bd_sram/v0.0.1
new file mode 160000
index 000000000..d95f31543
--- /dev/null
+++ b/libraries/sky130_fd_bd_sram/v0.0.1
@@ -0,0 +1 @@
+Subproject commit d95f31543f141348a7baaf2be1d42de5479daf7e