diff --git a/lang-lexer/Cargo.toml b/lang-lexer/Cargo.toml
index 0594d0189..06c024f00 100644
--- a/lang-lexer/Cargo.toml
+++ b/lang-lexer/Cargo.toml
@@ -24,7 +24,7 @@ rserde = { version = "1.0", optional = true, features = ["derive"], package = "s
 logos = { version = "0.12", optional = true }
 
 # v2 lexer dependencies
-glsl-lang-pp = { version = "0.5.0", optional = true }
+glsl-lang-pp = { version = "0.5.1", optional = true }
 lalrpop-util = { version = "0.19.7", default-features = false, optional = true }
 
 [features]
diff --git a/lang/Cargo.toml b/lang/Cargo.toml
index 1b99a0000..2f9f74ed6 100644
--- a/lang/Cargo.toml
+++ b/lang/Cargo.toml
@@ -18,7 +18,7 @@ once_cell = "1.17.1"
 thiserror = "1.0"
 
 lang-util = { version = "0.5.0", features = ["lalrpop"] }
-glsl-lang-pp = { version = "0.5.0", optional = true }
+glsl-lang-pp = { version = "0.5.1", optional = true }
 glsl-lang-lexer = { version = "0.5.0", features = ["lalrpop"] }
 glsl-lang-types = "0.5.0"
 
@@ -29,7 +29,7 @@ lalrpop = "0.19.9"
 
 [dev-dependencies]
 lang-util-dev = "0.5.0"
-glsl-lang-pp = "0.5.0"
+glsl-lang-pp = "0.5.1"
 
 criterion = "0.3"
 expect-test = "1.3"