diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd0f9ca62a..2b33b7d389 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -197,6 +197,27 @@ jobs:
       - name: test-tls-builtin
         run: ./runtest --verbose --single unit/tls --dump-logs --tls
 
+  test-ubuntu-libc-malloc:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install libbacktrace
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          repository: ianlancetaylor/libbacktrace
+          ref: b9e40069c0b47a722286b94eb5231f7f05c08713
+          path: libbacktrace
+      - run: cd libbacktrace && ./configure && make && sudo make install
+      - name: Checkout Valkey
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: make
+        run: make -j4 SERVER_CFLAGS='-Werror' MALLOC=libc CFLAGS=-DNO_MALLOC_USABLE_SIZE USE_LIBBACKTRACE=yes
+      - name: test
+        run: |
+          sudo apt-get install -y tcl8.6 tclx
+          ./runtest --verbose --tags -slow --dump-logs
+      - name: module api test
+        run: CFLAGS='-Werror' ./runtest-moduleapi --verbose --dump-logs
+
   build-debian-old:
     runs-on: ubuntu-latest
     container: debian:bullseye
@@ -287,21 +308,6 @@ jobs:
             GTEST_CFLAGS="-I/usr/src/googletest/googletest/include -I/usr/src/googletest/googlemock/include" \
             GTEST_LIBS="/usr/lib32/libgtest.a /usr/lib32/libgmock.a"
 
-  build-libc-malloc:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install libbacktrace
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          repository: ianlancetaylor/libbacktrace
-          ref: b9e40069c0b47a722286b94eb5231f7f05c08713
-          path: libbacktrace
-      - run: cd libbacktrace && ./configure && make && sudo make install
-      - name: Checkout Valkey
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - name: make
-        run: make -j4 SERVER_CFLAGS='-Werror' MALLOC=libc USE_LIBBACKTRACE=yes
-
   build-almalinux8-jemalloc:
     runs-on: ubuntu-latest
     container: almalinux:8
diff --git a/tests/integration/corrupt-dump-fuzzer.tcl b/tests/integration/corrupt-dump-fuzzer.tcl
index 1e647ac90d..da3cf35d53 100644
--- a/tests/integration/corrupt-dump-fuzzer.tcl
+++ b/tests/integration/corrupt-dump-fuzzer.tcl
@@ -2,7 +2,7 @@
 
 # The fuzzer can cause corrupt the state in many places, which could
 # mess up the reply, so we decided to skip logreqres.
-tags {"dump" "corruption" "external:skip" "logreqres:skip"} {
+tags {"dump" "corruption" "slow" "external:skip" "logreqres:skip"} {
 
 # catch sigterm so that in case one of the random command hangs the test,
 # usually due to the server not putting a response in the output buffers,