diff --git a/cozo-core/src/algo/pagerank.rs b/cozo-core/src/algo/pagerank.rs
index d6c866b7..7ada6097 100644
--- a/cozo-core/src/algo/pagerank.rs
+++ b/cozo-core/src/algo/pagerank.rs
@@ -8,9 +8,13 @@
 
 use std::collections::BTreeMap;
 
+#[cfg(not(feature = "rayon"))]
+use approx::AbsDiffEq;
 #[cfg(feature = "rayon")]
 use graph::prelude::{page_rank, CsrLayout, DirectedCsrGraph, GraphBuilder, PageRankConfig};
 use miette::Result;
+#[cfg(not(feature = "rayon"))]
+use nalgebra::{Dynamic, OMatrix, U1};
 use smartstring::{LazyCompact, SmartString};
 
 use crate::algo::AlgoImpl;
@@ -37,8 +41,8 @@ impl AlgoImpl for PageRank {
     ) -> Result<()> {
         let edges = algo.relation(0)?;
         let undirected = algo.bool_option("undirected", Some(false))?;
-        let theta = algo.unit_interval_option("theta", Some(0.8))? as f32;
-        let epsilon = algo.unit_interval_option("epsilon", Some(0.05))? as f32;
+        let theta = algo.unit_interval_option("theta", Some(0.85))? as f32;
+        let epsilon = algo.unit_interval_option("epsilon", Some(0.0001))? as f32;
         let iterations = algo.pos_integer_option("iterations", Some(10))?;
 
         let (graph, indices, _) = edges.convert_edge_to_graph(undirected, tx, stores)?;
@@ -98,9 +102,6 @@ fn pagerank(
     iterations: usize,
     poison: Poison,
 ) -> Result<OMatrix<f32, Dynamic, U1>> {
-    use approx::AbsDiffEq;
-    use nalgebra::{Dynamic, OMatrix, U1};
-
     let init_val = (1. - theta) / edges.len() as f32;
     let mut g_mat = OMatrix::<f32, Dynamic, Dynamic>::repeat(edges.len(), edges.len(), init_val);
     let n = edges.len();
diff --git a/scripts/build-release-linux.sh b/scripts/build-release-linux.sh
index de4c0071..31039bf8 100755
--- a/scripts/build-release-linux.sh
+++ b/scripts/build-release-linux.sh
@@ -4,9 +4,14 @@ set -e
 
 VERSION=$(cat ./VERSION)
 
-rm -fr release
+#rm -fr release
 mkdir -p release
 
+# python
+CARGO_NET_GIT_FETCH_WITH_CLI=true podman run --rm -v $(pwd):/io -w /io/cozo-lib-python ghcr.io/pyo3/maturin:latest build --release --strip -F compact -F storage-rocksdb
+# copy python
+cp target/wheels/*.whl release/
+
 for TARGET in aarch64-unknown-linux-gnu x86_64-unknown-linux-gnu; do
   # standalone, c, java, nodejs
   CARGO_PROFILE_RELEASE_LTO=fat cross build --release -p cozoserver -p cozo_c -p cozo_java -p cozo-node -F compact -F storage-rocksdb --target $TARGET
@@ -34,8 +39,3 @@ for TARGET in aarch64-linux-android armv7-linux-androideabi i686-linux-android x
   CARGO_PROFILE_RELEASE_LTO=fat cross build -p cozo_java --release --target=$TARGET
   cp target/$TARGET/release/libcozo_java.so release/libcozo_java-$VERSION-$TARGET.so # java
 done
-
-# python
-CARGO_NET_GIT_FETCH_WITH_CLI=true podman run --rm -v $(pwd):/io -w /io/cozo-lib-python ghcr.io/pyo3/maturin:latest build --release --strip -F compact -F storage-rocksdb
-# copy python
-cp target/wheels/*.whl release/
\ No newline at end of file
diff --git a/scripts/update-images.sh b/scripts/update-images.sh
new file mode 100644
index 00000000..e4c472e3
--- /dev/null
+++ b/scripts/update-images.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+#
+# Copyright 2022, The Cozo Project Authors.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+# If a copy of the MPL was not distributed with this file,
+# You can obtain one at https://mozilla.org/MPL/2.0/.
+#
+
+podman pull ghcr.io/pyo3/maturin:latest
+podman pull ghcr.io/cross-rs/x86_64-unknown-linux-musl:main
+podman pull ghcr.io/cross-rs/aarch64-unknown-linux-musl:main
+podman pull ghcr.io/cross-rs/x86_64-linux-android:main
+podman pull ghcr.io/cross-rs/i686-linux-android:main
+podman pull ghcr.io/cross-rs/aarch64-linux-android:main
+podman pull ghcr.io/cross-rs/armv7-linux-androideabi:main
+podman pull ghcr.io/cross-rs/x86_64-unknown-linux-gnu:main
+podman pull ghcr.io/cross-rs/aarch64-unknown-linux-gnu:main
\ No newline at end of file