diff --git a/lib.nix b/lib.nix
index 562153a..e165e00 100644
--- a/lib.nix
+++ b/lib.nix
@@ -27,9 +27,11 @@ with builtins; rec {
     else if system == "i686-darwin" then
       lib.findFirst ({host, ...}: (match "i[3456]86-apple-darwin.*" host) != null) null systems
     else if system == "aarch64-linux" then
-      lib.findFirst ({host, ...}: (match "(aarch64|arm64)-linux-gnu" host) != null) null systems
+      # tools.go uses regexp.MatchString which will also return true for substring matches, so we add a .* to the regex
+      lib.findFirst ({host, ...}: (match "(aarch64|arm64)-linux-gnu.*" host) != null) null systems
     else if system == "x86_64-linux" then
-      lib.findFirst ({host, ...}: (match "x86_64-.*linux-gnu" host) != null) null systems
+      # also add a .* to the regex here though it is not necessary in the current dataset (March 2024)
+      lib.findFirst ({host, ...}: (match "x86_64-.*linux-gnu.*" host) != null) null systems
     else null;
   convertHash = hash: let
     m = (match "(SHA-256|SHA-1|MD5):(.*)" hash);