diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f72fe3e..f5a8f84 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,16 +30,16 @@ jobs:
         uses: actions/checkout@master
 
       - name: Build tests container
-        run: docker-compose build tests
+        run: docker compose build tests
       
       - name: Run tests
-        run: docker-compose run tests
+        run: docker compose run tests
 
       - name: Run tests without typechecking
         id: no_typecheck
         uses: mathiasvr/command-output@v2.0.0
         with:
-          run: docker-compose run no_check_tests
+          run: docker compose run no_check_tests
         continue-on-error: true
 
       - name: Report no typechecking tests status
diff --git a/.github/workflows/publish_jsr.yml b/.github/workflows/publish_jsr.yml
index 50285a6..1548c84 100644
--- a/.github/workflows/publish_jsr.yml
+++ b/.github/workflows/publish_jsr.yml
@@ -39,10 +39,10 @@ jobs:
         run: deno test --doc client.ts mod.ts pool.ts client/ connection/ query/ utils/
 
       - name: Build tests container
-        run: docker-compose build tests
+        run: docker compose build tests
       
       - name: Run tests
-        run: docker-compose run tests
+        run: docker compose run tests
 
       - name: Publish (dry run)
         if: startsWith(github.ref, 'refs/tags/') == false
diff --git a/README.md b/README.md
index d45e051..aeb6382 100644
--- a/README.md
+++ b/README.md
@@ -86,8 +86,8 @@ result assertions.
 
 To run the tests, run the following commands:
 
-1. `docker-compose build tests`
-2. `docker-compose run tests`
+1. `docker compose build tests`
+2. `docker compose run tests`
 
 The build step will check linting and formatting as well and report it to the
 command line
diff --git a/client/error.ts b/client/error.ts
index 7fc4ccc..35d0599 100644
--- a/client/error.ts
+++ b/client/error.ts
@@ -1,4 +1,4 @@
-import { type Notice } from "../connection/message.ts";
+import type { Notice } from "../connection/message.ts";
 
 /**
  * A connection error
diff --git a/connection/connection.ts b/connection/connection.ts
index bc5d9cf..88cfa0f 100644
--- a/connection/connection.ts
+++ b/connection/connection.ts
@@ -54,7 +54,7 @@ import {
   type QueryResult,
   ResultType,
 } from "../query/query.ts";
-import { type ClientConfiguration } from "./connection_params.ts";
+import type { ClientConfiguration } from "./connection_params.ts";
 import * as scram from "./scram.ts";
 import {
   ConnectionError,
@@ -295,7 +295,7 @@ export class Connection {
   }
 
   async #openTlsConnection(
-    connection: Deno.Conn,
+    connection: Deno.TcpConn,
     options: { hostname: string; caCerts: string[] },
   ) {
     this.#conn = await Deno.startTls(connection, options);
@@ -354,7 +354,9 @@ export class Connection {
         // https://www.postgresql.org/docs/14/protocol-flow.html#id-1.10.5.7.11
         if (accepts_tls) {
           try {
-            await this.#openTlsConnection(this.#conn, {
+            // TODO: handle connection type without castinggaa
+            // https://github.com/denoland/deno/issues/10200
+            await this.#openTlsConnection(this.#conn as Deno.TcpConn, {
               hostname,
               caCerts: caCertificates,
             });
diff --git a/connection/connection_params.ts b/connection/connection_params.ts
index ac4f650..d59b9ac 100644
--- a/connection/connection_params.ts
+++ b/connection/connection_params.ts
@@ -1,9 +1,9 @@
 import { parseConnectionUri } from "../utils/utils.ts";
 import { ConnectionParamsError } from "../client/error.ts";
 import { fromFileUrl, isAbsolute } from "../deps.ts";
-import { OidType } from "../query/oid.ts";
-import { DebugControls } from "../debug.ts";
-import { ParseArrayFunction } from "../query/array_parser.ts";
+import type { OidType } from "../query/oid.ts";
+import type { DebugControls } from "../debug.ts";
+import type { ParseArrayFunction } from "../query/array_parser.ts";
 
 /**
  * The connection string must match the following URI structure. All parameters but database and user are optional
diff --git a/docker-compose.yml b/docker-compose.yml
index be91903..e49dc01 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.8'
-
 x-database-env:
   &database-env
   POSTGRES_DB: "postgres"
diff --git a/query/decode.ts b/query/decode.ts
index 38df157..cb5d9fc 100644
--- a/query/decode.ts
+++ b/query/decode.ts
@@ -1,4 +1,4 @@
-import { Oid, OidType, OidTypes, OidValue } from "./oid.ts";
+import { Oid, type OidType, OidTypes, type OidValue } from "./oid.ts";
 import { bold, yellow } from "../deps.ts";
 import {
   decodeBigint,
@@ -35,7 +35,7 @@ import {
   decodeTid,
   decodeTidArray,
 } from "./decoders.ts";
-import { ClientControls } from "../connection/connection_params.ts";
+import type { ClientControls } from "../connection/connection_params.ts";
 import { parseArray } from "./array_parser.ts";
 
 export class Column {
diff --git a/query/query.ts b/query/query.ts
index 9671f71..fa4eae8 100644
--- a/query/query.ts
+++ b/query/query.ts
@@ -1,7 +1,7 @@
 import { encodeArgument, type EncodedArg } from "./encode.ts";
 import { type Column, decode } from "./decode.ts";
-import { type Notice } from "../connection/message.ts";
-import { type ClientControls } from "../connection/connection_params.ts";
+import type { Notice } from "../connection/message.ts";
+import type { ClientControls } from "../connection/connection_params.ts";
 
 // TODO
 // Limit the type of parameters that can be passed
diff --git a/query/transaction.ts b/query/transaction.ts
index 3dadd33..02ba019 100644
--- a/query/transaction.ts
+++ b/query/transaction.ts
@@ -1,4 +1,4 @@
-import { type QueryClient } from "../client.ts";
+import type { QueryClient } from "../client.ts";
 import {
   Query,
   type QueryArguments,
diff --git a/tests/README.md b/tests/README.md
index c8c3e4e..38cc8c4 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -16,8 +16,8 @@ From within the project directory, run:
 deno test --allow-read --allow-net --allow-env
 
 # run in docker container
-docker-compose build --no-cache
-docker-compose run tests
+docker compose build --no-cache
+docker compose run tests
 ```
 
 ## Docker Configuration
diff --git a/tests/config.ts b/tests/config.ts
index 17bf701..4a6784c 100644
--- a/tests/config.ts
+++ b/tests/config.ts
@@ -1,4 +1,4 @@
-import {
+import type {
   ClientConfiguration,
   ClientOptions,
 } from "../connection/connection_params.ts";
diff --git a/tests/helpers.ts b/tests/helpers.ts
index d1630d3..e26a7f2 100644
--- a/tests/helpers.ts
+++ b/tests/helpers.ts
@@ -1,6 +1,6 @@
 import { Client } from "../client.ts";
 import { Pool } from "../pool.ts";
-import { type ClientOptions } from "../connection/connection_params.ts";
+import type { ClientOptions } from "../connection/connection_params.ts";
 
 export function generateSimpleClientTest(
   client_options: ClientOptions,
diff --git a/tests/query_client_test.ts b/tests/query_client_test.ts
index c096049..abc7332 100644
--- a/tests/query_client_test.ts
+++ b/tests/query_client_test.ts
@@ -14,8 +14,8 @@ import {
   assertThrows,
 } from "./test_deps.ts";
 import { getMainConfiguration } from "./config.ts";
-import { PoolClient, QueryClient } from "../client.ts";
-import { ClientOptions } from "../connection/connection_params.ts";
+import type { PoolClient, QueryClient } from "../client.ts";
+import type { ClientOptions } from "../connection/connection_params.ts";
 import { Oid } from "../query/oid.ts";
 
 function withClient(
diff --git a/tests/utils_test.ts b/tests/utils_test.ts
index d5e418d..1491831 100644
--- a/tests/utils_test.ts
+++ b/tests/utils_test.ts
@@ -1,5 +1,5 @@
 import { assertEquals, assertThrows } from "./test_deps.ts";
-import { parseConnectionUri, Uri } from "../utils/utils.ts";
+import { parseConnectionUri, type Uri } from "../utils/utils.ts";
 import { DeferredAccessStack, DeferredStack } from "../utils/deferred.ts";
 
 class LazilyInitializedObject {