diff --git a/conf/python_source.src b/conf/python_source.src
new file mode 100644
index 0000000..4d05e76
--- /dev/null
+++ b/conf/python_source.src
@@ -0,0 +1,2 @@
+SOURCE_URL=https://github.com/matrix-org/synapse/archive/v0.26.0.tar.gz
+SOURCE_SUM=234dd5fa44895e855d11fbf50de9184d057977b10b296f594d2c3758f693eff3 
diff --git a/scripts/_common.sh b/scripts/_common.sh
index f7216cc..e69de29 100755
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-src_sum="234dd5fa44895e855d11fbf50de9184d057977b10b296f594d2c3758f693eff3"
diff --git a/scripts/install b/scripts/install
index 496d05a..3747d9d 100644
--- a/scripts/install
+++ b/scripts/install
@@ -158,7 +158,12 @@ else
     pip install --upgrade pip
     pip install --upgrade setuptools
     pip install --upgrade cffi ndg-httpsclient psycopg2 lxml
-    wget -nv -O synapse_source.tar.gz https://github.com/matrix-org/synapse/archive/v$upstream_version.tar.gz
+    
+    # Download and check the checksum for the synapse source
+    src_url=$(grep 'SOURCE_URL=' "$YNH_CWD/../conf/python_source.src" | cut -d= -f2-)
+    src_sum=$(grep 'SOURCE_SUM=' "$YNH_CWD/../conf/python_source.src" | cut -d= -f2-)
+    
+    wget -nv -O synapse_source.tar.gz "$src_url"
     echo "${src_sum} synapse_source.tar.gz" | sha256sum -c --status \
         || ynh_die "Corrupt source"
     pip install --upgrade synapse_source.tar.gz