diff --git a/ci/test/00_setup_env_native_centos.sh b/ci/test/00_setup_env_native_centos.sh
index 4f06a29daf4..b10bf275102 100755
--- a/ci/test/00_setup_env_native_centos.sh
+++ b/ci/test/00_setup_env_native_centos.sh
@@ -10,6 +10,6 @@ export CONTAINER_NAME=ci_native_centos
 export CI_IMAGE_NAME_TAG="quay.io/centos/centos:stream10"
 export CI_BASE_PACKAGES="gcc-c++ glibc-devel libstdc++-devel ccache make ninja-build git python3 python3-pip which patch xz procps-ng ksh rsync coreutils bison e2fsprogs cmake"
 export PIP_PACKAGES="pyzmq"
-export DEP_OPTS="DEBUG=1"  # Temporarily enable a DEBUG=1 build to check for GCC-bug-117966 regressions. This can be removed once the minimum GCC version is bumped to 12 in the previous releases task, see https://github.com/bitcoin/bitcoin/issues/31436#issuecomment-2530717875
+export DEP_OPTS="DEBUG=1"
 export GOAL="install"
 export BITCOIN_CONFIG="-DWITH_ZMQ=ON -DBUILD_GUI=ON -DREDUCE_EXPORTS=ON -DCMAKE_BUILD_TYPE=Debug"
diff --git a/ci/test/00_setup_env_native_previous_releases.sh b/ci/test/00_setup_env_native_previous_releases.sh
index 66d454b960c..2a26c4c578b 100755
--- a/ci/test/00_setup_env_native_previous_releases.sh
+++ b/ci/test/00_setup_env_native_previous_releases.sh
@@ -10,7 +10,7 @@ export CONTAINER_NAME=ci_native_previous_releases
 export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:22.04"
 # Use minimum supported python3.10 and gcc-11, see doc/dependencies.md
 export PACKAGES="gcc-11 g++-11 python3-zmq"
-export DEP_OPTS="DEBUG=1 CC=gcc-11 CXX=g++-11"
+export DEP_OPTS="CC=gcc-11 CXX=g++-11"
 export TEST_RUNNER_EXTRA="--previous-releases --coverage --extended --exclude feature_dbcrash"  # Run extended tests so that coverage does not fail, but exclude the very slow dbcrash
 export RUN_UNIT_TESTS_SEQUENTIAL="true"
 export RUN_UNIT_TESTS="false"
@@ -20,8 +20,8 @@ export BITCOIN_CONFIG="\
  -DWITH_ZMQ=ON -DBUILD_GUI=ON -DREDUCE_EXPORTS=ON \
  -DCMAKE_BUILD_TYPE=Debug \
  -DCMAKE_C_FLAGS='-funsigned-char' \
- -DCMAKE_C_FLAGS_DEBUG='-g0 -O2' \
+ -DCMAKE_C_FLAGS_DEBUG='-g2 -O2' \
  -DCMAKE_CXX_FLAGS='-funsigned-char' \
- -DCMAKE_CXX_FLAGS_DEBUG='-g0 -O2' \
+ -DCMAKE_CXX_FLAGS_DEBUG='-g2 -O2' \
  -DAPPEND_CPPFLAGS='-DBOOST_MULTI_INDEX_ENABLE_SAFE_MODE' \
 "