diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index d027632b..2bfc50ca 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -40,7 +40,7 @@ jobs:
       uses: conda-incubator/setup-miniconda@11b562958363ec5770fef326fe8ef0366f8cbf8a
       with:
         auto-update-conda: true
-        python-version: 3.9
+        python-version: 3.11
         channels: conda-forge,bioconda
         miniforge-variant: Mambaforge
         miniforge-version: latest
diff --git a/Cargo.lock b/Cargo.lock
index 36bd883e..c51b2bc1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1636,7 +1636,7 @@ dependencies = [
 
 [[package]]
 name = "sourmash_plugin_branchwater"
-version = "0.8.4"
+version = "0.8.5"
 dependencies = [
  "anyhow",
  "assert_cmd",
diff --git a/Cargo.toml b/Cargo.toml
index c08a6e03..405b67a2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sourmash_plugin_branchwater"
-version = "0.8.4"
+version = "0.8.5"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/pyproject.toml b/pyproject.toml
index 3f53986e..789da011 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,13 +2,13 @@
 name = "sourmash_plugin_branchwater"
 description = "fast command-line extensions for sourmash"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 classifiers = [
     "Programming Language :: Rust",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     ]
-dependencies = ["sourmash>=4.8.3,<5"]
+dependencies = ["sourmash>=4.8.5,<5"]
 
 authors = [
   { name="N. Tessa Pierce-Ward", orcid="0000-0002-2942-5331" },
@@ -18,7 +18,7 @@ authors = [
 ]
 
 [build-system]
-requires = ["maturin>=1.1.0,<2"]
+requires = ["maturin>=1.4.0,<2"]
 build-backend = "maturin"
 
 [project.entry-points."sourmash.cli_script"]