diff --git a/.circleci/config.yml b/.circleci/config.yml
index 6c630aba24253a8c8d855e2de81b9ac69ba3e28a..735831e3fce2f6b39fb0fa35b7caf8af32e51382 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -227,7 +227,7 @@ workflows:
         matrix:
           parameters:
             tahoe-lafs-source:
-            - "tahoe-lafs-1.17.0"
+            - "tahoe-lafs"
 
     - "macos-tests":
         matrix:
diff --git a/default.nix b/default.nix
index 5202fa637b934a198f538fa367a9873e323a5d50..877d3a698fd933495ac7c1826b826eaca931e12c 100644
--- a/default.nix
+++ b/default.nix
@@ -4,7 +4,7 @@ in
 { pkgs ? import sources.release2105 {}
 , pypiData ? sources.pypi-deps-db
 , mach-nix ? import sources.mach-nix { inherit pkgs pypiData; }
-, tahoe-lafs-source ? "tahoe-lafs-1.17.0"
+, tahoe-lafs-source ? "tahoe-lafs"
 , tahoe-lafs-repo ? sources.${tahoe-lafs-source}
 }:
   let
diff --git a/nix/sources.json b/nix/sources.json
index a8da3eca759cde9e58f6528e1c53f518a6aaa239..fdde626e48c8f4c98f24532a65da6829345b6f6e 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -41,7 +41,7 @@
         "url": "https://releases.nixos.org/nixos/21.05/nixos-21.05.3740.ce7a1190a0f/nixexprs.tar.xz",
         "url_template": "https://releases.nixos.org/nixos/21.05/nixos-21.05.3740.ce7a1190a0f/nixexprs.tar.xz"
     },
-    "tahoe-lafs-1.17.0": {
+    "tahoe-lafs": {
         "branch": "master",
         "description": "The Tahoe-LAFS decentralized secure filesystem.",
         "homepage": "https://tahoe-lafs.org/",
diff --git a/shell.nix b/shell.nix
index 46c096c1229e4345de1edc0c7d95d22a4b9a7b9a..0f661ebc3692fbf6bfe199abc0cbd8fbd6feaa8e 100644
--- a/shell.nix
+++ b/shell.nix
@@ -2,7 +2,7 @@ let
   sources = import nix/sources.nix;
 in
 { pkgs ? import sources.release2105 {}
-, tahoe-lafs-source ? "tahoe-lafs-1.17.0"
+, tahoe-lafs-source ? "tahoe-lafs"
 }:
   let
     tests = pkgs.callPackage ./tests.nix {
diff --git a/tests.nix b/tests.nix
index 6bbd41ba7e53105ba3f17cfb08cfaa5b8f76c1d8..c985ce0f41b39c886b67788243835d2ee8605808 100644
--- a/tests.nix
+++ b/tests.nix
@@ -4,7 +4,7 @@ in
 { pkgs ? import sources.release2105 {}
 , pypiData ? sources.pypi-deps-db
 , mach-nix ? import sources.mach-nix { inherit pkgs pypiData; }
-, tahoe-lafs-source ? "tahoe-lafs-1.17.0"
+, tahoe-lafs-source ? "tahoe-lafs"
 , tahoe-lafs-repo ? sources.${tahoe-lafs-source}
 , privatestorage ? import ./. {
     inherit pkgs pypiData mach-nix;