diff --git a/Cargo.toml b/Cargo.toml
index 23ee219..50c5936 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ version = "0.3.2"
 publish = []
 
 [dependencies]
-doc-comment = "0.*"
+doc-comment = "0.3.3"
 minutus = { path = "minutus", features = ["mruby_3_2_0", "link_mruby"] }
 
 # workspace settings
diff --git a/minutus-macros/Cargo.toml b/minutus-macros/Cargo.toml
index 1d9c48b..7e394f2 100644
--- a/minutus-macros/Cargo.toml
+++ b/minutus-macros/Cargo.toml
@@ -8,11 +8,11 @@ description = "Procedural macro definitions for minutus"
 repository = "https://github.com/genya0407/minutus"
 
 [dependencies]
-darling = "0.*"
+darling = "0.20.3"
 proc-macro2 = "1.*"
 quote = "1.*"
 syn = { version = "1.*", features = ["full", "extra-traits"] }
-convert_case = "0.*"
+convert_case = "0.6.0"
 
 [lib]
 proc-macro = true
diff --git a/minutus-mrbgem-template/Cargo.toml b/minutus-mrbgem-template/Cargo.toml
index cc7b95e..c22f2f3 100644
--- a/minutus-mrbgem-template/Cargo.toml
+++ b/minutus-mrbgem-template/Cargo.toml
@@ -15,8 +15,8 @@ minutus = { version = "0.4.0", path = "../minutus", features = ["mruby_3_2_0"] }
 [dependencies]
 minutus = { version = "0.4.0", path = "../minutus", features = ["mruby_3_2_0"] }
 maplit = "1.*"
-argopt = "0.*"
-convert_case = "0.*"
+argopt = "0.3.0"
+convert_case = "0.6.0"
 anyhow = "1.*"
 tera = "1.*"
 lazy_static = "1.*"
diff --git a/minutus-mruby-build-utils/Cargo.toml b/minutus-mruby-build-utils/Cargo.toml
index 22d6d12..e6e983c 100644
--- a/minutus-mruby-build-utils/Cargo.toml
+++ b/minutus-mruby-build-utils/Cargo.toml
@@ -10,7 +10,7 @@ repository = "https://github.com/genya0407/minutus"
 [dependencies]
 anyhow = "1.*"
 bytes = "1.*"
-tar = "0.*"
-reqwest = { version = "0.*", features = ["blocking"] }
+tar = "0.4.40"
+reqwest = { version = "0.11.23", features = ["blocking"] }
 flate2 = "1.*"
 cc = "1.*"
diff --git a/minutus/Cargo.toml b/minutus/Cargo.toml
index 7a1d1a4..1c98dc1 100644
--- a/minutus/Cargo.toml
+++ b/minutus/Cargo.toml
@@ -13,10 +13,10 @@ readme = "../README.md"
 [build-dependencies]
 minutus-mruby-build-utils = { version = "0.3.2-alpha.1", path = "../minutus-mruby-build-utils" }
 anyhow = "1.*"
-bindgen = "0.*"
+bindgen = "0.69.1"
 cc = "1.*"
 bytes = "1.*"
-tar = "0.*"
+tar = "0.4.40"
 flate2 = "1.*"
 
 [dependencies]