diff --git a/.jazzy.yml b/.jazzy.yml
index 81b3c5d..148661f 100644
--- a/.jazzy.yml
+++ b/.jazzy.yml
@@ -3,5 +3,5 @@ author: Dave Abrahams
 theme: fullwidth
 output: ./docs
 author_url: "https://daveabrahams.com"
-github_url: "https://github.com/val-lang/Lotsawa"
-root_url: "https://val-lang.github.io/Lotsawa/reference/"
+github_url: "https://github.com/hylo-lang/Lotsawa"
+root_url: "https://hylo-lang.github.io/Lotsawa/reference/"
diff --git a/.spi.yml b/.spi.yml
index 0afce92..c6feac8 100644
--- a/.spi.yml
+++ b/.spi.yml
@@ -6,6 +6,6 @@ builder:
   custom_documentation_parameters: [
   --include-extended-types, --enable-inherited-docs,
   --source-service, github,
-  --source-service-base-url, https://github.com/val-lang/Lotsawa/blob/main,
+  --source-service-base-url, https://github.com/hylo-lang/Lotsawa/blob/main,
   --checkout-path, .
   ]
diff --git a/README.md b/README.md
index 1616f69..ec4ce03 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # Lotsawa
 
-[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fval-lang%2FLotsawa%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/val-lang/Lotsawa)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fval-lang%2FLotsawa%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/hylo-lang/Lotsawa)
 
-[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fval-lang%2FLotsawa%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/val-lang/Lotsawa)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fval-lang%2FLotsawa%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/hylo-lang/Lotsawa)
 
 A parsing library and tool with the essential features of
 [MARPA](https://jeffreykegler.github.io/Marpa-web-site/), encoded in pure Swift.
@@ -17,8 +17,8 @@ Lotsawa owes almost everything of value to MARPA and its author, Jeffrey Kegler,
 [thread of progress in parsing technology](https://jeffreykegler.github.io/personal/timeline_v3),
 gathering it together into one group of algorithms, proving important properties about them, and
 contributing some key innovations.  This project exists primarily because MARPA is [missing
-functionality](https://github.com/jeffreykegler/libmarpa/issues/117) needed by the [Val
-language](https://github.com/val-lang/val) implementation.
+functionality](https://github.com/jeffreykegler/libmarpa/issues/117) needed by the [Hylo
+language](https://github.com/hylo-lang/hylo) implementation.
 
 Secondary reasons Lotsawa might be useful:
 
diff --git a/Tests/LotsawaTests/GrammarPreprocessing.swift b/Tests/LotsawaTests/GrammarPreprocessing.swift
index 6f4d3a6..4f3c115 100644
--- a/Tests/LotsawaTests/GrammarPreprocessing.swift
+++ b/Tests/LotsawaTests/GrammarPreprocessing.swift
@@ -11,7 +11,7 @@ class GrammarPreprocessing: XCTestCase {
   }
 }
 
-// This is a very ambiguous grammar derived from Val with explicit representation of whitespace.
+// This is a very ambiguous grammar derived from Hylo with explicit representation of whitespace.
 let valWithExplicitWhitespace: [(lhs: Int, rhs: [Int])] = [
   (lhs: 2, rhs: [3]),
   (lhs: 2, rhs: [4]),