diff --git a/Cargo.lock b/Cargo.lock
index 946a634..6c6641d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "ad9959"
 version = "0.1.0"
@@ -457,7 +459,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c0d5c9540a691d153064dc47a4db2504587a75eae07bf1d73f7a596ebc73c04"
 dependencies = [
  "matrixmultiply",
- "num-complex",
+ "num-complex 0.3.1",
  "num-integer",
  "num-traits",
  "rawpointer",
@@ -471,11 +473,11 @@ checksum = "2178127478ae4ee9be7180bc9c3bffb6354dd7238400db567102f98c413a9f35"
 
 [[package]]
 name = "num"
-version = "0.3.1"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b7a8e9be5e039e2ff869df49155f1c06bd01ade2117ec783e56ab0932b67a8f"
+checksum = "43db66d1170d347f9a065114077f7dccb00c1b9478c89384490a3425279a4606"
 dependencies = [
- "num-complex",
+ "num-complex 0.4.0",
  "num-integer",
  "num-iter",
  "num-rational",
@@ -491,6 +493,15 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-complex"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26873667bbbb7c5182d4a37c1add32cdf09f841af72da53318fdb81543c15085"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -514,9 +525,9 @@ dependencies = [
 
 [[package]]
 name = "num-rational"
-version = "0.3.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
+checksum = "d41702bd167c2df5520b384281bc111a4b5efcf7fbc4c9c222c815b07e0a6a6a"
 dependencies = [
  "autocfg",
  "num-integer",
@@ -748,12 +759,12 @@ checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
 [[package]]
 name = "stm32h7"
-version = "0.12.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7571f17d1ed7d67957d0004de6c52bd1ef5e736ed5ddc2bcecf001512269f77c"
+checksum = "8b672c837e0ee8158ecc7fce0f9a948dd0693a9c588338e728d14b73307a0b7d"
 dependencies = [
  "bare-metal 0.2.5",
- "cortex-m 0.6.7",
+ "cortex-m 0.7.1",
  "cortex-m-rt",
  "vcell",
 ]
@@ -761,11 +772,11 @@ dependencies = [
 [[package]]
 name = "stm32h7xx-hal"
 version = "0.8.0"
-source = "git+https://github.com/stm32-rs/stm32h7xx-hal?branch=master#08231e334a11236fe556668ac19cb1c214da2406"
+source = "git+https://github.com/stm32-rs/stm32h7xx-hal?branch=master#ad2a1ae9831dd34e171cc178cdad84e770b4c0ae"
 dependencies = [
  "bare-metal 1.0.0",
  "cast",
- "cortex-m 0.6.7",
+ "cortex-m 0.7.1",
  "cortex-m-rt",
  "embedded-dma",
  "embedded-hal",
diff --git a/README.md b/README.md
index 19b5a0d..4250d6a 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 [![QUARTIQ Matrix Chat](https://img.shields.io/matrix/quartiq:matrix.org)](https://matrix.to/#/#quartiq:matrix.org)
+[![Continuous Integration](https://github.com/quartiq/stabilizer/actions/workflows/ci.yml/badge.svg)](https://github.com/quartiq/stabilizer/actions/workflows/ci.yml)
 [![HITL (private)](https://github.com/quartiq/hitl/workflows/Stabilizer/badge.svg)](https://github.com/quartiq/hitl/actions?query=workflow%3AStabilizer)
 
 # Stabilizer Firmware
diff --git a/dsp/Cargo.toml b/dsp/Cargo.toml
index 4c675ff..9b92078 100644
--- a/dsp/Cargo.toml
+++ b/dsp/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 libm = "0.2.1"
 serde = { version = "1.0", features = ["derive"], default-features = false }
 generic-array = "0.14"
-num = { version = "0.3.1", default-features = false }
+num = { version = "0.4.0", default-features = false }
 miniconf = "0.1"
 
 [dev-dependencies]
diff --git a/src/hardware/pounder/mod.rs b/src/hardware/pounder/mod.rs
index 0497a37..32a8e80 100644
--- a/src/hardware/pounder/mod.rs
+++ b/src/hardware/pounder/mod.rs
@@ -231,14 +231,16 @@ impl ad9959::Interface for QspiInterface {
                 };
 
                 self.qspi
-                    .write(encoded_address, &encoded_payload)
+                    .write(encoded_address.into(), &encoded_payload)
                     .map_err(|_| Error::Qspi)
             }
             ad9959::Mode::FourBitSerial => {
                 if self.streaming {
                     Err(Error::Qspi)
                 } else {
-                    self.qspi.write(addr, data).map_err(|_| Error::Qspi)?;
+                    self.qspi
+                        .write(addr.into(), data)
+                        .map_err(|_| Error::Qspi)?;
                     Ok(())
                 }
             }
@@ -257,7 +259,7 @@ impl ad9959::Interface for QspiInterface {
         }
 
         self.qspi
-            .read(0x80_u8 | addr, dest)
+            .read((0x80_u8 | addr).into(), dest)
             .map_err(|_| Error::Qspi)
     }
 }