diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ea7bd423f2..b107e9ff2c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -864,7 +864,7 @@ gcc:asan:
     CC: gcc
     CFLAGS: "${CFLAGS_COMMON} -fsanitize=address,undefined"
     LDFLAGS: "-fsanitize=address,undefined"
-    EXTRA_CONFIGURE: "--with-libidn2"
+    EXTRA_CONFIGURE: "--with-libidn2 --without-jemalloc"
   <<: *base_image
   <<: *build_job
 
@@ -891,7 +891,7 @@ clang:asan:
     CC: ${CLANG}
     CFLAGS: "${CFLAGS_COMMON} -fsanitize=address,undefined"
     LDFLAGS: "-fsanitize=address,undefined"
-    EXTRA_CONFIGURE: "--with-libidn2"
+    EXTRA_CONFIGURE: "--with-libidn2 --without-jemalloc"
   <<: *base_image
   <<: *build_job
 
@@ -922,7 +922,7 @@ gcc:tsan:
     CC: gcc
     CFLAGS: "${CFLAGS_COMMON} -fsanitize=thread"
     LDFLAGS: "-fsanitize=thread"
-    EXTRA_CONFIGURE: "--with-libidn2 --enable-pthread-rwlock"
+    EXTRA_CONFIGURE: "--with-libidn2 --enable-pthread-rwlock --without-jemalloc"
 
 system:gcc:tsan:
   variables:
@@ -949,7 +949,7 @@ clang:tsan:
     CC: "${CLANG}"
     CFLAGS: "${CFLAGS_COMMON} -fsanitize=thread"
     LDFLAGS: "-fsanitize=thread"
-    EXTRA_CONFIGURE: "--with-libidn2 --enable-pthread-rwlock"
+    EXTRA_CONFIGURE: "--with-libidn2 --enable-pthread-rwlock --without-jemalloc"
 
 system:clang:tsan:
   variables: