diff --git a/lang-pp/Cargo.toml b/lang-pp/Cargo.toml
index 1e41205a9..c41577212 100644
--- a/lang-pp/Cargo.toml
+++ b/lang-pp/Cargo.toml
@@ -32,7 +32,7 @@ itertools = { version = "0.13", optional = true }
 once_cell = { version = "1.17.1", optional = true }
 
 [dev-dependencies]
-lang-util-dev = "=0.5.3"
+lang-util-dev = "=0.6.0-beta.1"
 
 expect-test = "1.3"
 encoding_rs = "0.8"
diff --git a/lang/Cargo.toml b/lang/Cargo.toml
index 68e77186e..06d5dc55b 100644
--- a/lang/Cargo.toml
+++ b/lang/Cargo.toml
@@ -28,8 +28,8 @@ rserde = { version = "1.0", optional = true, features = ["derive"], package = "s
 lalrpop = "0.20.0"
 
 [dev-dependencies]
-lang-util-dev = "=0.5.3"
-glsl-lang-pp = "=0.5.3"
+lang-util-dev = "=0.6.0-beta.1"
+glsl-lang-pp = "=0.6.0-beta.1"
 
 criterion = "0.5"
 expect-test = "1.3"