diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5dec9ab7..e31e4d67 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ defaults:
     shell: bash
 
 env:
-  OPENSSL_SRC_VERSION: 1.1.1o
+  OPENSSL_SRC_VERSION: 1.1.1w
 
 jobs:
   build:
@@ -48,7 +48,7 @@ jobs:
           BUILD_WITH_OPENSSL_SRC: ${{ matrix.BUILD_WITH_OPENSSL_SRC }}
           CXX: g++
         run: |
-          sudo apt-get -qq install rake bison git gperf zlib1g-dev g++-11 libstdc++-11-dev
+          sudo apt-get -qq install rake bison git gperf zlib1g-dev g++-11 libstdc++-11-dev valgrind
           sudo apt-get remove -y libssl-dev
           if [ "$CXX" = "g++" ]; then
             export CXX="g++-11" CC="gcc-11" LD="gcc-11"
@@ -78,6 +78,9 @@ jobs:
           NGINX_VERSION: ${{ matrix.NGINX_VERSION }}
           BUILD_DYNAMIC_MODULE: ${{ matrix.BUILD_DYNAMIC_MODULE }}
           BUILD_WITH_OPENSSL_SRC: ${{ matrix.BUILD_WITH_OPENSSL_SRC }}
+          NUM_THREADS_ENV: 1
+          NGINX_RUNNER: valgrind
+          NGINX_HEATTIME: 10
         run: |
           echo "NGINX_SRC_MAJOR=$(echo $NGINX_VERSION | cut -d '.' -f 1)" > nginx_version
           echo "NGINX_SRC_MINOR=$(echo $NGINX_VERSION | cut -d '.' -f 2)" >> nginx_version
diff --git a/src/http/ngx_http_mruby_core.c b/src/http/ngx_http_mruby_core.c
index eafb9e78..ed29326c 100644
--- a/src/http/ngx_http_mruby_core.c
+++ b/src/http/ngx_http_mruby_core.c
@@ -380,7 +380,6 @@ static mrb_value ngx_mrb_redirect(mrb_state *mrb, mrb_value self)
     r->headers_out.status = rc;
   } else {
     ngx_http_internal_redirect(r, &ns, &r->args);
-    ngx_http_finalize_request(r, NGX_DONE);
   }
 
   return self;
diff --git a/src/http/ngx_http_mruby_module.c b/src/http/ngx_http_mruby_module.c
index 76acfbb4..77bafddb 100644
--- a/src/http/ngx_http_mruby_module.c
+++ b/src/http/ngx_http_mruby_module.c
@@ -1001,7 +1001,7 @@ static ngx_int_t ngx_http_mruby_shared_state_compile(ngx_conf_t *cf, ngx_mrb_sta
 #ifdef NGX_MRUBY_IREP_DEBUG
   code->ctx->dump_result = TRUE;
 #endif
- 
+
   if (code->code_type == NGX_MRB_CODE_TYPE_FILE) {
     if ((mrb_file = fopen((char *)code->code.file, "r")) == NULL) {
       return NGX_ERROR;
@@ -1026,7 +1026,7 @@ static ngx_int_t ngx_http_mruby_shared_state_compile(ngx_conf_t *cf, ngx_mrb_sta
 
 #ifdef NGX_MRUBY_IREP_DEBUG
   /* mrb_codedump_all() is not declared in mruby headers. So just follows the mruby way. See mruby/src/load.c. */
-  void mrb_codedump_all(mrb_state*, struct RProc*);
+  void mrb_codedump_all(mrb_state *, struct RProc *);
   mrb_codedump_all(state->mrb, code->proc);
 #endif
 
@@ -2047,9 +2047,11 @@ static int ngx_http_mruby_ssl_cert_handler(ngx_ssl_conn_t *ssl_conn, void *data)
     return 0;
   }
 
+  host.len = 0;
+  host.data = NULL;
   servername = SSL_get_servername(ssl_conn, TLSEXT_NAMETYPE_host_name);
+
   if (servername == NULL) {
-    host.len = 0;
     ngx_log_error(NGX_LOG_DEBUG, c->log, 0, MODULE_NAME " : mruby ssl handler: SSL server name NULL");
   } else {
     host.len = ngx_strlen(servername);