diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 41b8acd..2c51e31 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -11,9 +11,10 @@ jobs:
 
     strategy:
       matrix:
-        elixir: ["1.16"]
-        otp: ["26"]
-        clickhouse: ["latest"]
+        # TODO
+        elixir: [v1.17.0-rc.0]
+        otp: [27]
+        clickhouse: [latest]
 
     services:
       clickhouse:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bb3f798..084f96d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,22 +14,27 @@ jobs:
 
     strategy:
       matrix:
-        elixir: ["1.14", "1.15", "1.16"]
-        otp: ["25", "26"]
-        clickhouse: ["latest"]
-        timezone: ["UTC"]
+        elixir: [1.14, 1.15, 1.16]
+        otp: [25, 26]
+        clickhouse: [latest]
+        timezone: [UTC]
         include:
-          - elixir: "1.16"
-            otp: "26"
-            clickhouse: "latest"
-            timezone: "Europe/Berlin"
+          - elixir: 1.16
+            otp: 26
+            clickhouse: latest
+            timezone: Europe/Berlin
+          # TODO
+          - elixir: v1.17.0-rc.0
+            otp: 27
+            clickhouse: latest
+            timezone: UTC
           # Plausible
           # - https://github.com/plausible/analytics/blob/master/.tool-versions
           # - https://github.com/plausible/analytics/blob/master/.github/workflows/elixir.yml
-          - elixir: "1.16.0"
-            otp: "26.2.1"
-            clickhouse: "24.3.3.102"
-            timezone: "UTC"
+          - elixir: 1.16.0
+            otp: 26.2.1
+            clickhouse: 24.3.3.102
+            timezone: UTC
 
     services:
       clickhouse:
@@ -67,12 +72,13 @@ jobs:
       - run: mix test --include slow
 
   format:
-    runs-on: ubuntu-latest 
+    runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4 
+      - uses: actions/checkout@v4
       - uses: erlef/setup-beam@v1
         with:
-          elixir-version: "1"
-          otp-version: "26"
+          # TODO
+          elixir-version: v1.17.0-rc.0
+          otp-version: 27
       - run: elixir -v
       - run: mix format --check-formatted
diff --git a/test/ch/query_test.exs b/test/ch/query_test.exs
index c8eec26..6ffdd4c 100644
--- a/test/ch/query_test.exs
+++ b/test/ch/query_test.exs
@@ -113,7 +113,7 @@ defmodule Ch.QueryTest do
     test "decoded binaries copy behaviour", %{conn: conn} do
       text = "hello world"
       assert [[bin]] = Ch.query!(conn, "SELECT {$0:String}", [text]).rows
-      assert :binary.referenced_byte_size(bin) == byte_size(text)
+      assert :binary.referenced_byte_size(bin) == :binary.referenced_byte_size("hello world")
 
       # For OTP 20+ refc binaries up to 64 bytes might be copied during a GC
       text = String.duplicate("hello world", 6)