diff --git a/pkgs/python-packages/python-bitcointx/default.nix b/pkgs/python-packages/python-bitcointx/default.nix
index a39ee5b..fd6b7fe 100644
--- a/pkgs/python-packages/python-bitcointx/default.nix
+++ b/pkgs/python-packages/python-bitcointx/default.nix
@@ -2,13 +2,13 @@
 
 buildPythonPackageWithDepsCheck rec {
   pname = "python-bitcointx";
-  version = "1.1.4";
+  version = "1.1.5";
 
   src = fetchFromGitHub {
     owner = "Simplexum";
     repo = "python-bitcointx";
     rev = "python-bitcointx-v${version}";
-    hash = "sha256-y8/cyLQr3GbpYqCg8LKTfyL0OX7eIo5AxjdFTWTqHmk=";
+    hash = "sha256-KXndYEsJ8JRTiGojrKXmAEeGDlHrNGs5MtYs9XYiqMo=";
   };
 
   patchPhase = ''
@@ -18,10 +18,14 @@ buildPythonPackageWithDepsCheck rec {
     done
   '';
 
+  pythonImportCheck = [
+    "bitcointx"
+  ];
+
   meta = with lib; {
     description = "Interface to Bitcoin transaction data structures";
     homepage = "https://github.com/Simplexum/python-bitcointx";
-    maintainers = with maintainers; [ nixbitcoin ];
+    maintainers = with maintainers; [ seberm nixbitcoin ];
     license = licenses.gpl3;
   };
 }
diff --git a/pkgs/python-packages/python-bitcointx/get-sha256.sh b/pkgs/python-packages/python-bitcointx/get-sha256.sh
index 0ecceb9..a625280 100755
--- a/pkgs/python-packages/python-bitcointx/get-sha256.sh
+++ b/pkgs/python-packages/python-bitcointx/get-sha256.sh
@@ -1,26 +1,26 @@
 #!/usr/bin/env bash
 set -euo pipefail
-. "${BASH_SOURCE[0]%/*}/../../../helper/run-in-nix-env" "git gnupg" "$@"
+. "${BASH_SOURCE[0]%/*}/../../../helper/run-in-nix-env" "git gnupg jq" "$@"
 
-TMPDIR=$(mktemp -d -p /tmp)
-trap 'rm -rf $TMPDIR' EXIT
-cd "$TMPDIR"
+latest=$(curl -s "https://api.github.com/repos/Simplexum/python-bitcointx/tags" | jq -r '.[0].name')
+echo "Latest release is $latest"
 
-echo "Fetching latest release"
-git clone https://github.com/simplexum/python-bitcointx 2> /dev/null
-cd python-bitcointx
-latest=python-bitcointx-v1.1.4
-echo "Latest release is ${latest}"
+tmpdir=$(mktemp -d /tmp/python-bitcointx-verify-gpg.XXX)
+trap 'rm -rf $tmpdir' EXIT
+repo=$tmpdir/repo
+git clone --depth 1 --branch "$latest" -c advice.detachedHead=false https://github.com/Simplexum/python-bitcointx "$repo"
 
 # GPG verification
-export GNUPGHOME=$TMPDIR
+export GNUPGHOME=$tmpdir
 echo "Fetching Dimitry Pethukov's Key"
 gpg --keyserver hkps://keyserver.ubuntu.com --recv-keys B17A35BBA187395784E2A6B32301D26BDC15160D 2> /dev/null
-echo "Verifying latest release"
-git verify-commit "$latest"
-
-git checkout -q "tags/$latest"
-rm -rf .git
+echo
+echo "Verifying commit"
+git -C "$repo" checkout -q "tags/$latest"
+git -C "$repo" verify-commit HEAD
+rm -rf "$repo"/.git
+hash=$(nix hash path "$repo")
 
+echo
 echo "tag: $latest"
-nix hash path .
+echo "hash: $hash"