diff --git a/ci/install-rust.sh b/ci/install-rust.sh
index 598dec282d003abe4ddf64d6a247c7b9cadcaa69..dcd24b88ef7b7d32f64e08ce9fc45eb324dd37a1 100644
--- a/ci/install-rust.sh
+++ b/ci/install-rust.sh
@@ -47,13 +47,13 @@ if [ "$OS" = "windows" ]; then
 fi
 
 echo "Query rust and cargo versions"
+command -v rustc
+command -v cargo
+command -v rustup
 rustc -Vv
 cargo -V
 rustup -Vv
 rustup show
-which rustc
-which cargo
-which rustup
 
 echo "Generate lockfile"
 N=5
diff --git a/ci/run-docker.sh b/ci/run-docker.sh
index 648eafcd9411935e1ef55a12efd68749379b4825..f1fa6656c44b95a312cad16cd0c0c945deb7e581 100755
--- a/ci/run-docker.sh
+++ b/ci/run-docker.sh
@@ -62,7 +62,7 @@ build_switch() {
         kvm=""
     fi
 
-    cp "$(which rustup)" "$(rustc --print sysroot)/bin"
+    cp "$(command -v rustup)" "$(rustc --print sysroot)/bin"
 
     docker run \
       --rm \