diff --git a/Cargo.toml b/Cargo.toml
index f15d2375..20e523fd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,24 +8,24 @@ edition.workspace = true
 license.workspace = true
 
 [dependencies]
-crc32fast = "1.5.0"
-esplugin = "6.1.3"
-libloadorder = "18.4.0"
-log = { version = "0.4.28", features = ["std"] }
-loot-condition-interpreter = "5.3.2"
-petgraph = "0.8.1"
-rayon = "1.11.0"
-regress = "0.10.4"
-rustc-hash = "2.1.1"
-saphyr = "0.0.6"
-unicase = "2.8.1"
+crc32fast = "1"
+esplugin = "6.1"
+libloadorder = "18.4"
+log = { version = "0.4.6", features = ["std"] }
+loot-condition-interpreter = "5"
+petgraph = ">= 0.6, < 0.9"
+rayon = "1"
+regress = ">= 0.2.0, < 0.11"
+rustc-hash = ">= 1.0.0, < 3"
+saphyr = ">= 0.0.5, < 0.0.7"
+unicase = "2.6.0"
 
 [target.'cfg(windows)'.dependencies]
-windows-sys = { version = "0.61.0", features = ["Win32_Storage_FileSystem"] }
+windows-sys = { version = ">= 0.60.0, < 0.62", features = ["Win32_Storage_FileSystem"] }
 
 [dev-dependencies]
-array-parameterized-test = { path = "./array-parameterized-test", version = "1.0.0" }
-tempfile = "3.21.0"
+array-parameterized-test = { path = "./array-parameterized-test", version = "1" }
+tempfile = "3"
 
 [lints]
 workspace = true
diff --git a/array-parameterized-test/Cargo.toml b/array-parameterized-test/Cargo.toml
index 930c873d..13c8d495 100644
--- a/array-parameterized-test/Cargo.toml
+++ b/array-parameterized-test/Cargo.toml
@@ -8,9 +8,9 @@ edition.workspace = true
 license = "MIT"
 
 [dependencies]
-proc-macro2 = "1.0.101"
-quote = "1.0.40"
-syn = { version = "2.0.106", features = ["full"] }
+proc-macro2 = "1.0.83"
+quote = "1.0.35"
+syn = { version = ">= 1.0.0, < 3", features = ["full"] }
 
 [lib]
 proc-macro = true
diff --git a/cpp/Cargo.toml b/cpp/Cargo.toml
index 036ef377..1bf51b23 100644
--- a/cpp/Cargo.toml
+++ b/cpp/Cargo.toml
@@ -8,13 +8,13 @@ edition.workspace = true
 license.workspace = true
 
 [dependencies]
-cxx = { version = "1.0", features = ["c++17"] }
-delegate = "0.13.4"
+cxx = { version = "1.0.142", features = ["c++17"] }
+delegate = ">= 0.5.1, < 0.14"
 libloot = { path = ".." }
 libloot-ffi-errors = { path = "../ffi-errors" }
 
 [build-dependencies]
-cxx-build = "1.0"
+cxx-build = "1.0.142"
 
 [lib]
 crate-type = ["staticlib"]
diff --git a/python/Cargo.toml b/python/Cargo.toml
index c47d7302..6cafc160 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -15,8 +15,8 @@ crate-type = ["cdylib"]
 [dependencies]
 libloot = { path = ".." }
 libloot-ffi-errors = { path = "../ffi-errors" }
-pyo3 = "0.25.0"
-pyo3-log = "0.12.4"
+pyo3 = ">= 0.23.3, < 0.26"
+pyo3-log = "0.12"
 
 [lints]
 workspace = true