diff --git a/Makefile b/Makefile
index 37817c2..50b95b1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,9 @@
 .PHONY: test test_e2e
 
 test:
-	docker-compose build test && docker-compose run --rm test
-	docker-compose down -t 0
+	docker compose build test && docker compose run --rm test
+	docker compose down -t 0
 
 test_e2e:
-	docker-compose build test_e2e && docker-compose run --rm test_e2e
-	docker-compose down -t 0
+	docker compose build test_e2e && docker compose run --rm test_e2e
+	docker compose down -t 0
diff --git a/docker/Dockerfile.e2e b/docker/Dockerfile.e2e
index d64f9e1..213513a 100644
--- a/docker/Dockerfile.e2e
+++ b/docker/Dockerfile.e2e
@@ -2,7 +2,7 @@ FROM rust:1.63.0-alpine3.16
 
 USER root
 
-RUN apk add --no-cache musl-dev openssl-dev pkgconfig && cargo install websocat
+RUN apk add --no-cache musl-dev openssl-dev pkgconfig && cargo install websocat@1.10.0
 
 COPY ./docker/test_e2e.sh /usr/local/bin/test_e2e
 RUN chmod +x /usr/local/bin/test_e2e
diff --git a/docker/Dockerfile.nginx b/docker/Dockerfile.nginx
index 00b50cf..66c3caf 100644
--- a/docker/Dockerfile.nginx
+++ b/docker/Dockerfile.nginx
@@ -1,4 +1,4 @@
-FROM k8s.gcr.io/ingress-nginx/controller:v0.44.0 as builder
+FROM k8s.gcr.io/ingress-nginx/controller:v1.1.1 as builder
 
 USER root
 
@@ -14,5 +14,5 @@ RUN cd ./nginx && \
     --add-dynamic-module=../ngx_http_websocket_stat_module && \
     make modules
 
-FROM k8s.gcr.io/ingress-nginx/controller:v0.44.0
+FROM k8s.gcr.io/ingress-nginx/controller:v1.1.1
 COPY --from=builder /tmp/nginx/objs/ngx_http_websocket_stat_module.so /etc/nginx/modules/
diff --git a/src/ngx_http_websocket_stat_format.c b/src/ngx_http_websocket_stat_format.c
index 3086a83..7009f44 100644
--- a/src/ngx_http_websocket_stat_format.c
+++ b/src/ngx_http_websocket_stat_format.c
@@ -40,9 +40,9 @@ compare_occurance(const void *_first, const void *_second)
 ngx_array_t *
 ngx_array_create(void *pool, size_t size, size_t el_size)
 {
-    ngx_array_t *res = malloc(sizeof(ngx_array_t));
+    ngx_array_t *res = ngx_palloc(pool, sizeof(ngx_array_t));
     res->nelts = 0;
-    res->elts = malloc(100 * el_size);
+    res->elts = ngx_palloc(pool, 100 * el_size);
     res->el_size = el_size;
     return res;
 }
@@ -191,7 +191,7 @@ char *
 apply_template(compiled_template *template_cmpl, ngx_http_request_t *r,
                void *data)
 {
-    char *result = malloc(strlen(template_cmpl->compiled_template_str) + 1);
+    char *result = ngx_palloc(template_cmpl->pool, strlen(template_cmpl->compiled_template_str) + 1);
     strcpy(result, template_cmpl->compiled_template_str);
     unsigned int i;
     char buff[256];
diff --git a/src/ngx_http_websocket_stat_module.c b/src/ngx_http_websocket_stat_module.c
index 17ac7b4..769ef02 100644
--- a/src/ngx_http_websocket_stat_module.c
+++ b/src/ngx_http_websocket_stat_module.c
@@ -117,7 +117,7 @@ ws_do_log(compiled_template *template, ngx_http_request_t *r, void *ctx)
     if (!log_line) return;
     ngx_write_fd(srvcf->ws_log->file->fd, log_line, strlen(log_line));
     ngx_write_fd(srvcf->ws_log->file->fd, &CARET_RETURN, sizeof(char));
-    free(log_line);
+    ngx_pfree(template->pool, log_line);
 }
 
 static int