diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6c14c941b1..b72e88b14b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -790,12 +790,19 @@ gcc:sid:amd64:
   variables:
     CC: gcc
     CFLAGS: "${CFLAGS_COMMON} -O3"
-    EXTRA_CONFIGURE: "--with-libidn2 --without-lmdb ${WITH_READLINE}"
+    # For the jemalloc ./configure option, see https://gitlab.isc.org/isc-projects/bind9/-/issues/3444
+    EXTRA_CONFIGURE: "--with-libidn2 --without-lmdb --without-jemalloc ${WITH_READLINE}"
     RUN_MAKE_INSTALL: 1
   <<: *debian_sid_amd64_image
   <<: *build_job
 
 system:gcc:sid:amd64:
+  # Set up environment variables that allow the "keyfromlabel" system test to be run
+  variables:
+    DEFAULT_OPENSSL_CONF: "/etc/ssl/openssl.cnf"
+    OPENSSL_CONF: "/var/tmp/etc/openssl.cnf"
+    SOFTHSM2_CONF: "/var/tmp/softhsm2/softhsm2.conf"
+    SOFTHSM2_MODULE: "/usr/lib/softhsm/libsofthsm2.so"
   <<: *debian_sid_amd64_image
   <<: *system_test_job
   needs: