diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index cb299b1..b945364 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -1534,6 +1534,10 @@
             {
                 sig_alg_list[i++] = MBEDTLS_TLS13_SIG_ECDSA_SECP521R1_SHA512;
             }
+            else if( strcmp( q, "rsa_pkcs1_sha256" ) == 0 )
+            {
+                sig_alg_list[i++] = MBEDTLS_TLS13_SIG_RSA_PKCS1_SHA1;
+            }
             else
             {
                 mbedtls_printf( "unknown signature algorithm %s\n", q );
@@ -1541,6 +1545,7 @@
                 mbedtls_printf( "ecdsa_secp256r1_sha256 " );
                 mbedtls_printf( "ecdsa_secp384r1_sha384 " );
                 mbedtls_printf( "ecdsa_secp521r1_sha512 " );
+                mbedtls_printf( "rsa_pkcs1_sha256 " );
                 mbedtls_printf( "\n" );
                 goto exit;
             }
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 241b1b6..00c7f88 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -2610,6 +2610,22 @@
     if_build_succeeded tests/ssl-opt.sh
 }
 
+component_test_tls13_experimental_with_rsa () {
+    msg "default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with rsa"
+    scripts/config.py   set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+    scripts/config.py unset MBEDTLS_SSL_USE_MPS
+    scripts/config.py unset MBEDTLS_SSL_SRV_C
+    scripts/config.py   set MBEDTLS_SSL_CLI_C
+    scripts/config.py   set MBEDTLS_RSA_C
+    scripts/config.py   set MBEDTLS_X509_RSASSA_PSS_SUPPORT
+    cmake CC=gcc CMAKE_BUILD_TYPE=ASanDbg .
+    make
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with rsa"
+    make test
+    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    if_build_succeeded tests/ssl-opt.sh -f "TLS 1.3"
+}
+
 component_build_mingw () {
     msg "build: Windows cross build - mingw64, make (Link Library)" # ~ 30s
     make CC=i686-w64-mingw32-gcc AR=i686-w64-mingw32-ar LD=i686-w64-minggw32-ld CFLAGS='-Werror -Wall -Wextra' WINDOWS_BUILD=1 lib programs