diff --git a/benchmarks/Cargo.toml b/benchmarks/Cargo.toml
index c8faa55..89c7e62 100644
--- a/benchmarks/Cargo.toml
+++ b/benchmarks/Cargo.toml
@@ -21,4 +21,4 @@ semver010 = { version = "0.10", package = "semver" }
 semver_rs = "0.1"
 
 [dev-dependencies]
-test-case = "1"
+test-case = "3"
diff --git a/builder/Cargo.toml b/builder/Cargo.toml
index e11caa9..d7d6ed3 100644
--- a/builder/Cargo.toml
+++ b/builder/Cargo.toml
@@ -21,7 +21,7 @@ default = ["semver"]
 
 [dev-dependencies]
 semver = "1"
-test-case = "1"
+test-case = "3"
 
 [package.metadata.docs.rs]
 features = ["semver"]
diff --git a/parser/Cargo.toml b/parser/Cargo.toml
index ae1c516..950dc13 100644
--- a/parser/Cargo.toml
+++ b/parser/Cargo.toml
@@ -28,7 +28,7 @@ strict = []
 
 [dev-dependencies]
 semver_v100 = {version = "1", package = "semver" }
-test-case = "1"
+test-case = "3"
 
 [package.metadata.docs.rs]
 features = ["semver"]
diff --git a/version/Cargo.toml b/version/Cargo.toml
index 32efa00..66fa5f3 100644
--- a/version/Cargo.toml
+++ b/version/Cargo.toml
@@ -28,7 +28,7 @@ parser = ["lenient_semver_parser", "lenient_semver_version_builder"]
 
 [dev-dependencies]
 serde_json = "1"
-test-case = "1"
+test-case = "3"
 
 [package.metadata.docs.rs]
 features = ["parser", "semver"]