diff --git a/Cargo.lock b/Cargo.lock
index 9302834..dcf4c58 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -39,7 +39,6 @@ dependencies = [
  "libcortex_a9 0.0.0",
  "libregister 0.0.0",
  "smoltcp 0.5.0 (git+https://github.com/m-labs/smoltcp.git?rev=8eb01aca364aefe5f823d68d552d62c76c9be4a3)",
- "vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -50,8 +49,6 @@ dependencies = [
  "bit_field 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libregister 0.0.0",
  "smoltcp 0.5.0 (git+https://github.com/m-labs/smoltcp.git?rev=8eb01aca364aefe5f823d68d552d62c76c9be4a3)",
- "vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/libboard_zynq/Cargo.toml b/libboard_zynq/Cargo.toml
index 004e8c2..4a64aa7 100644
--- a/libboard_zynq/Cargo.toml
+++ b/libboard_zynq/Cargo.toml
@@ -10,7 +10,6 @@ target_zc706 = []
 target_cora_z7_10 = []
 
 [dependencies]
-vcell = "0.1"
 volatile-register = "0.2"
 bit_field = "0.10"
 libregister = { path = "../libregister" }
diff --git a/libcortex_a9/Cargo.toml b/libcortex_a9/Cargo.toml
index c46f50f..8657ed5 100644
--- a/libcortex_a9/Cargo.toml
+++ b/libcortex_a9/Cargo.toml
@@ -10,8 +10,6 @@ target_cora_z7_10 = []
 default = ["target_zc706"]
 
 [dependencies]
-vcell = "0.1"
-volatile-register = "0.2"
 bit_field = "0.10"
 libregister = { path = "../libregister" }