diff --git a/lang-cli/Cargo.toml b/lang-cli/Cargo.toml
index afea6a288..d1b0ad98f 100644
--- a/lang-cli/Cargo.toml
+++ b/lang-cli/Cargo.toml
@@ -13,8 +13,8 @@ keywords = ["glsl", "language", "parser", "ast", "cli"]
 categories = ["command-line-interface", "parser-implementations", "rendering"]
 
 [dependencies]
-glsl-lang = { version = "0.5.0", features = ["lexer-v2-full"] }
-lang-util = "0.5.0"
+glsl-lang = { version = "=0.5.1", features = ["lexer-v2-full"] }
+lang-util = "=0.5.1"
 argh = "0.1"
 
 serde_json = { version = "1.0", optional = true }
diff --git a/lang-lexer/Cargo.toml b/lang-lexer/Cargo.toml
index 0594d0189..56cb19f1f 100644
--- a/lang-lexer/Cargo.toml
+++ b/lang-lexer/Cargo.toml
@@ -13,8 +13,8 @@ keywords = ["glsl", "language", "parser"]
 categories = ["parser-implementations", "rendering"]
 
 [dependencies]
-glsl-lang-types = "0.5.0"
-lang-util = { version = "0.5.0", features = ["lalrpop"] }
+glsl-lang-types = "=0.5.1"
+lang-util = { version = "=0.5.1", features = ["lalrpop"] }
 
 thiserror = "1.0"
 
@@ -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-pp/Cargo.toml b/lang-pp/Cargo.toml
index 5a297de05..1e9455d06 100644
--- a/lang-pp/Cargo.toml
+++ b/lang-pp/Cargo.toml
@@ -14,7 +14,7 @@ categories = ["parser-implementations", "rendering"]
 build = "build.rs"
 
 [dependencies]
-lang-util = "0.5.0"
+lang-util = "=0.5.1"
 
 string_cache = "0.8"
 thiserror = "1.0"
@@ -32,7 +32,7 @@ itertools = { version = "0.10", optional = true }
 once_cell = { version = "1.17.1", optional = true }
 
 [dev-dependencies]
-lang-util-dev = "0.5.0"
+lang-util-dev = "=0.5.1"
 
 expect-test = "1.3"
 encoding_rs = "0.8"
diff --git a/lang-quote/Cargo.toml b/lang-quote/Cargo.toml
index 6eeab6c99..43e4879af 100644
--- a/lang-quote/Cargo.toml
+++ b/lang-quote/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 path = "src/lib.rs"
 
 [dependencies]
-glsl-lang = { version = "0.5.0", default-features = false, features = ["lexer-v2-full"] }
+glsl-lang = { version = "=0.5.1", default-features = false, features = ["lexer-v2-full"] }
 
 proc-macro2 = "1"
 quote = "1"
diff --git a/lang-types/Cargo.toml b/lang-types/Cargo.toml
index 0fcfebf26..e74b256f7 100644
--- a/lang-types/Cargo.toml
+++ b/lang-types/Cargo.toml
@@ -13,7 +13,7 @@ keywords = ["glsl", "language", "parser"]
 categories = ["rendering"]
 
 [dependencies]
-lang-util = "0.5.0"
+lang-util = "=0.5.1"
 thiserror = "1.0"
 
 rserde = { version = "1.0", optional = true, features = ["derive"], package = "serde" }
diff --git a/lang-util/Cargo.toml b/lang-util/Cargo.toml
index 63aeda37e..29dbd55ba 100644
--- a/lang-util/Cargo.toml
+++ b/lang-util/Cargo.toml
@@ -13,7 +13,7 @@ keywords = ["language", "parser", "ast"]
 categories = ["parsing"]
 
 [dependencies]
-lang-util-derive = "0.5.0"
+lang-util-derive = "=0.5.1"
 line-span = "0.1"
 smol_str = "0.1"
 text-size = "1.1"
diff --git a/lang/Cargo.toml b/lang/Cargo.toml
index 1b99a0000..98677def3 100644
--- a/lang/Cargo.toml
+++ b/lang/Cargo.toml
@@ -17,10 +17,10 @@ lalrpop-util = { version = "0.19.9", default-features = false, features = ["std"
 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-lexer = { version = "0.5.0", features = ["lalrpop"] }
-glsl-lang-types = "0.5.0"
+lang-util = { version = "=0.5.1", features = ["lalrpop"] }
+glsl-lang-pp = { version = "=0.5.1", optional = true }
+glsl-lang-lexer = { version = "=0.5.1", features = ["lalrpop"] }
+glsl-lang-types = "=0.5.1"
 
 rserde = { version = "1.0", optional = true, features = ["derive"], package = "serde" }
 
@@ -28,8 +28,8 @@ rserde = { version = "1.0", optional = true, features = ["derive"], package = "s
 lalrpop = "0.19.9"
 
 [dev-dependencies]
-lang-util-dev = "0.5.0"
-glsl-lang-pp = "0.5.0"
+lang-util-dev = "=0.5.1"
+glsl-lang-pp = "=0.5.1"
 
 criterion = "0.3"
 expect-test = "1.3"