diff --git a/tests/build-remote-content-addressed-floating.sh b/tests/build-remote-content-addressed-floating.sh
index 1f474dde0..e83b42b41 100644
--- a/tests/build-remote-content-addressed-floating.sh
+++ b/tests/build-remote-content-addressed-floating.sh
@@ -2,7 +2,7 @@ source common.sh
 
 file=build-hook-ca-floating.nix
 
-enableFeatures "ca-derivations ca-references"
+enableFeatures "ca-derivations"
 
 CONTENT_ADDRESSED=true
 
diff --git a/tests/ca/common.sh b/tests/ca/common.sh
index b9d415863..b104b5a78 100644
--- a/tests/ca/common.sh
+++ b/tests/ca/common.sh
@@ -1,5 +1,5 @@
 source ../common.sh
 
-enableFeatures "ca-derivations ca-references"
+enableFeatures "ca-derivations"
 
 restartDaemon
diff --git a/tests/ca/selfref-gc.sh b/tests/ca/selfref-gc.sh
index 89657f6de..248778894 100755
--- a/tests/ca/selfref-gc.sh
+++ b/tests/ca/selfref-gc.sh
@@ -4,7 +4,7 @@ source common.sh
 
 requireDaemonNewerThan "2.4pre20210626"
 
-sed -i 's/experimental-features .*/& ca-derivations ca-references nix-command flakes/' "$NIX_CONF_DIR"/nix.conf
+enableFeatures "ca-derivations nix-command flakes"
 
 export NIX_TESTS_CA_BY_DEFAULT=1
 cd ..
diff --git a/tests/nix-profile.sh b/tests/nix-profile.sh
index a7a4d4fa2..fad62b993 100644
--- a/tests/nix-profile.sh
+++ b/tests/nix-profile.sh
@@ -3,7 +3,7 @@ source common.sh
 clearStore
 clearProfiles
 
-enableFeatures "ca-derivations ca-references"
+enableFeatures "ca-derivations"
 restartDaemon
 
 # Make a flake.