diff --git a/tests/content-addressed.nix b/tests/content-addressed.nix
index 586e4cba6..1fa6aabff 100644
--- a/tests/content-addressed.nix
+++ b/tests/content-addressed.nix
@@ -4,16 +4,29 @@ with import ./config.nix;
 # A simple content-addressed derivation.
 # The derivation can be arbitrarily modified by passing a different `seed`,
 # but the output will always be the same
-mkDerivation {
-  name = "simple-content-addressed";
-  buildCommand = ''
-    set -x
-    echo "Building a CA derivation"
-    echo "The seed is ${toString seed}"
-    mkdir -p $out
-    echo "Hello World" > $out/hello
-  '';
-  __contentAddressed = true;
-  outputHashMode = "recursive";
-  outputHashAlgo = "sha256";
+rec {
+  rootLegacy = mkDerivation {
+    name = "simple-content-addressed";
+    buildCommand = ''
+      set -x
+      echo "Building a legacy derivation"
+      mkdir -p $out
+      echo "Hello World" > $out/hello
+    '';
+    __contentAddressed = true;
+    outputHashMode = "recursive";
+    outputHashAlgo = "sha256";
+  };
+  rootCA = mkDerivation {
+    name = "dependent";
+    buildCommand = ''
+      echo "building a CA derivation"
+      echo "The seed is ${toString seed}"
+      mkdir -p $out
+      echo ${rootLegacy}/hello > $out/dep
+    '';
+    __contentAddressed = true;
+    outputHashMode = "recursive";
+    outputHashAlgo = "sha256";
+  };
 }
diff --git a/tests/content-addressed.sh b/tests/content-addressed.sh
index 2968f3a8c..ae9e3c59e 100644
--- a/tests/content-addressed.sh
+++ b/tests/content-addressed.sh
@@ -7,10 +7,11 @@ clearCache
 
 export REMOTE_STORE=file://$cacheDir
 
-drv=$(nix-instantiate --experimental-features ca-derivations ./content-addressed.nix --arg seed 1)
+drv=$(nix-instantiate --experimental-features ca-derivations ./content-addressed.nix -A rootCA --arg seed 1)
 nix --experimental-features 'nix-command ca-derivations' show-derivation --derivation "$drv" --arg seed 1
 
-out1=$(nix-build --experimental-features ca-derivations ./content-addressed.nix --arg seed 1 --no-out-link)
-out2=$(nix-build --experimental-features ca-derivations ./content-addressed.nix --arg seed 2 --no-out-link)
+commonArgs=("--experimental-features" "ca-derivations" "./content-addressed.nix" "-A" "rootCA" "--no-out-link")
+out1=$(nix-build "${commonArgs[@]}" ./content-addressed.nix --arg seed 1)
+out2=$(nix-build "${commonArgs[@]}" ./content-addressed.nix --arg seed 2)
 
 test $out1 == $out2