diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1c96c180b2..fabef6d393 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -886,20 +886,13 @@ scan-build:
 gcc:sid:amd64:
   variables:
     CC: gcc
-    CFLAGS: "${CFLAGS_COMMON} -O3 -DOPENSSL_API_COMPAT=10100"
-    # For the jemalloc ./configure option, see https://gitlab.isc.org/isc-projects/bind9/-/issues/3444
-    EXTRA_CONFIGURE: "--with-libidn2 --without-lmdb --without-jemalloc ${WITH_READLINE}"
+    CFLAGS: "${CFLAGS_COMMON} -O3"
+    EXTRA_CONFIGURE: "--with-libidn2 --without-lmdb ${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:
@@ -1258,7 +1251,7 @@ clang:bookworm:amd64:
   variables:
     BUILD_CONTRIB: 1
     CC: ${CLANG}
-    CFLAGS: "${CFLAGS_COMMON} -Wenum-conversion"
+    CFLAGS: "${CFLAGS_COMMON} -Wenum-conversion -DOPENSSL_API_COMPAT=10100"
     # See https://gitlab.isc.org/isc-projects/bind9/-/issues/3444
     EXTRA_CONFIGURE: "--without-jemalloc"
     RUN_MAKE_INSTALL: 1