diff --git a/.github/workflows/nginx-buildbot.yml b/.github/workflows/nginx-buildbot.yml
index 2bcde00..d8af11e 100644
--- a/.github/workflows/nginx-buildbot.yml
+++ b/.github/workflows/nginx-buildbot.yml
@@ -44,9 +44,11 @@ jobs:
     needs: check-if-allowed
     strategy:
       matrix:
-        os: [ alpine-3.19, amazonlinux-2, amazonlinux-2023, debian-11, debian-12, freebsd-14, rhel-8, rhel-9, sles-12, ubuntu-20.04, ubuntu-22.04, ubuntu-24.04 ]
+        #        os: [ alpine-3.19, amazonlinux-2, amazonlinux-2023, debian-11, debian-12, freebsd-14, rhel-8, rhel-9, sles-12, ubuntu-20.04, ubuntu-22.04, ubuntu-24.04 ]
+        os: [ ubuntu-22.04 ]
         arch: [ amd64, arm64 ]
         subarch: [ '' ]
+        asan: [ '' ]
         exclude:
           - os: freebsd-14 # we don't have an arm64 builder for freebsd-14 yet
             arch: arm64
@@ -56,6 +58,10 @@ jobs:
           - os: debian-12
             arch: amd64
             subarch: x86
+        include:
+          - os: ubuntu-22.04
+            arch: amd64
+            asan: asan
       fail-fast: false
 
     steps:
@@ -254,9 +260,18 @@ jobs:
                 # abuse for 32-bit perl...
                 NGINX_CONFIGURE_ADD_GEOIP="--with-perl=/usr/bin/perl5.36-i386-linux-gnu"
                 NGINX_CONFIGURE_ADD_GEOIP_MODULES="--with-perl=/usr/bin/perl5.36-i386-linux-gnu"
+                NGINX_CONFIGURE_ADD_AUX="--with-cc-opt=-m32 --with-ld-opt=-m32"
               ;;
             esac
 
+            case "${{ matrix.asan }}" in
+              asan)
+                CC_OPT="-O1 -g -fsanitize=address -fno-omit-frame-pointer -DNJS_DEBUG_MEMORY -DNGX_DEBUG_PALLOC -DNGX_DEBUG_MALLOC -DNGX_QUIC_DEBUG_PACKETS -DNGX_QUIC_DEBUG_FRAMES -DNGX_QUIC_DEBUG_ALLOC -DNGX_QUIC_DEBUG_CRYPTO"
+                LD_OPT="-fsanitize=address -lcrypt"
+                NGINX_CONFIGURE_ADD_AUX="--with-cc-opt='-O1 -g -fsanitize=address -fno-omit-frame-pointer -DNGX_DEBUG_PALLOC -DNGX_DEBUG_MALLOC' --with-ld-opt='-fsanitize=address -lcrypt'"
+                ;;
+            esac
+
             echo CC_OPT="$CC_OPT_ADD $CC_OPT" >> $GITHUB_ENV
             echo LD_OPT="$LD_OPT_ADD $LD_OPT" >> $GITHUB_ENV
             echo NGINX_CONFIGURE_CMD_MIN="$NGINX_CONFIGURE_CMD_MIN" >> $GITHUB_ENV
@@ -268,6 +283,7 @@ jobs:
             echo NGINX_CONFIGURE_ADD_GEOIP="$NGINX_CONFIGURE_ADD_GEOIP" >> $GITHUB_ENV
             echo NGINX_CONFIGURE_ADD_GEOIP_MODULES="$NGINX_CONFIGURE_ADD_GEOIP_MODULES" >> $GITHUB_ENV
             echo NGINX_CONFIGURE_ADD_AIO="$NGINX_CONFIGURE_ADD_AIO" >> $GITHUB_ENV
+            echo NGINX_CONFIGURE_ADD_AUX="$NGINX_CONFIGURE_ADD_AUX" >> $GITHUB_ENV
             echo TEST_NGINX_GLOBALS_HTTP_AIO="$TEST_NGINX_GLOBALS_HTTP_AIO" >> $GITHUB_ENV
 
             case "${{ matrix.os }}" in
@@ -285,13 +301,13 @@ jobs:
 
       - name: Configure and build std
         run: |
-          ./auto/configure
+          ./auto/configure $NGINX_CONFIGURE_ADD_AUX
           make -j$(nproc) -k || make
           make clean
 
       - name: Configure and build min
         run: |
-          $NGINX_CONFIGURE_CMD_MIN
+          $NGINX_CONFIGURE_CMD_MIN $NGINX_CONFIGURE_ADD_AUX
           make -j$(nproc) -k || make
           make clean