diff --git a/.gitignore b/.gitignore
index aa584b2..e6f9856 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 SOURCES/distro-1.4.0.tar.gz
+/distro-1.4.0.tar.gz
diff --git a/.python-distro.metadata b/.python-distro.metadata
new file mode 100644
index 0000000..fae24d9
--- /dev/null
+++ b/.python-distro.metadata
@@ -0,0 +1 @@
+d72ac60844b2b472fc815441afe60fc1da728926 distro-1.4.0.tar.gz
diff --git a/sources b/sources
index 82cc006..8caa918 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (distro-1.4.0.tar.gz) = d72ac60844b2b472fc815441afe60fc1da728926
+SHA512 (distro-1.4.0.tar.gz) = eac7d32ea77c2074e57c6828a8b2e4d4d01e9c46cb0f7adbd99998630b0af4924bf18d05d5f5b42fef5603b024ef835dbb4c05fc88310f5e64d193514b2fc10f