diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3c9295c1..382c4118 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -110,6 +110,10 @@ jobs:
             python: "3.14"
             postgres: "17"
             case_suffix: "py3_14_xx-pg17_xx"
+          - platform: "alpine"
+            python: "3.15-rc"
+            postgres: "17"
+            case_suffix: "py3_15_rc-pg17_xx"
           - platform: "alpine"
             python: "3.12"
             postgres: "10"
diff --git a/Dockerfile--alpine.tmpl b/Dockerfile--alpine.tmpl
index d7cbc15d..1b5aa32d 100644
--- a/Dockerfile--alpine.tmpl
+++ b/Dockerfile--alpine.tmpl
@@ -77,6 +77,10 @@ ENV PYTHON_VERSION=3.13
 FROM base2_with_python-3 AS base3_with_python-3.14
 ENV PYTHON_VERSION=3.14
 
+# --------------------------------------------- base3_with_python-3.15-rc
+FROM base2_with_python-3 AS base3_with_python-3.15-rc
+ENV PYTHON_VERSION=3.15-dev
+
 # --------------------------------------------- final
 FROM base3_with_python-${PYTHON_VERSION} AS final