From 9f9510b735b3b9b2e375854d66fd315202e31d35 Mon Sep 17 00:00:00 2001
From: Max Ghenis <max@policyengine.org>
Date: Mon, 14 Sep 2026 17:24:14 -0400
Subject: [PATCH] Allow explicit SPM calculator post-release consumers

---
 changelog.d/spm-calculator-postrelease-compat.fixed.md | 1 +
 pyproject.toml                                         | 2 +-
 uv.lock                                                | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)
 create mode 100644 changelog.d/spm-calculator-postrelease-compat.fixed.md

diff --git a/changelog.d/spm-calculator-postrelease-compat.fixed.md b/changelog.d/spm-calculator-postrelease-compat.fixed.md
new file mode 100644
index 00000000000..3cb21112c23
--- /dev/null
+++ b/changelog.d/spm-calculator-postrelease-compat.fixed.md
@@ -0,0 +1 @@
+Allow spm-calculator 1.0.0.post1 alongside 1.0.0 so explicitly pinned development consumers can resolve either version; retain the default release lock at 1.0.0.
diff --git a/pyproject.toml b/pyproject.toml
index 9d8803a0fe4..445483baaf3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ dependencies = [
     # extension and is available on every supported Python version.
     "pandas>=3.0",
     "policyengine-core>=3.30.1",
-    "spm-calculator==1.0.0",
+    "spm-calculator>=1.0.0,<=1.0.0.post1",
     "tables>=3.9",
     "tqdm>=4.67.1",
 ]
diff --git a/uv.lock b/uv.lock
index 5d86fcc7c44..33b973e6ab0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1763,7 +1763,7 @@ requires-dist = [
     { name = "policyengine-core", specifier = ">=3.30.1" },
     { name = "ruff", marker = "extra == 'dev'", specifier = ">=0.9.0" },
     { name = "setuptools", marker = "extra == 'dev'", specifier = ">=80.9.0" },
-    { name = "spm-calculator", specifier = "==1.0.0" },
+    { name = "spm-calculator", specifier = ">=1.0.0,<=1.0.0.post1" },
     { name = "tables", specifier = ">=3.9" },
     { name = "towncrier", marker = "extra == 'dev'", specifier = ">=24.8.0" },
     { name = "tqdm", specifier = ">=4.67.1" },