diff --git a/Cargo.toml b/Cargo.toml
index 42f14f9..ec62d0b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ util = [ "structopt", "simplelog", "humantime", "linux-embedded-hal", "anyhow" ]
 default = [ "util" ]
 
 [dependencies]
-sensirion-i2c = "0.1"
+sensirion-i2c = "0.2"
 embedded-hal = "0.2"
 
 log = { version = "0.4.16", default_features = false }
@@ -33,7 +33,7 @@ humantime = { version = "2.1.0", optional = true }
 
 [dev-dependencies]
 linux-embedded-hal = "0.3"
-embedded-hal-mock = "0.8"
+embedded-hal-mock = "0.9"
 
 [[bin]]
 name = "scd4x-util"
diff --git a/src/scd4x.rs b/src/scd4x.rs
index ea998b2..5f58ec1 100644
--- a/src/scd4x.rs
+++ b/src/scd4x.rs
@@ -264,7 +264,7 @@ where
         if !allowed_if_running && self.is_running {
             return Err(Error::NotAllowed);
         }
-        i2c::write_command(&mut self.i2c, SCD4X_I2C_ADDRESS, command).map_err(Error::I2c)?;
+        i2c::write_command_u16(&mut self.i2c, SCD4X_I2C_ADDRESS, command).map_err(Error::I2c)?;
         self.delay.delay_ms(delay);
         Ok(())
     }