diff --git a/src/uu/cat/Cargo.toml b/src/uu/cat/Cargo.toml
index c292aade6..0374e80d9 100644
--- a/src/uu/cat/Cargo.toml
+++ b/src/uu/cat/Cargo.toml
@@ -23,7 +23,7 @@ uucore_procs = { version=">=0.0.7", package="uucore_procs", path="../../uucore_p
 
 [target.'cfg(unix)'.dependencies]
 unix_socket = "0.5.0"
-nix = "0.20.0"
+nix = "=0.23.1"
 
 [target.'cfg(windows)'.dependencies]
 winapi-util = "0.1.5"
diff --git a/src/uu/more/Cargo.toml b/src/uu/more/Cargo.toml
index 41aa469c8..c720ba1de 100644
--- a/src/uu/more/Cargo.toml
+++ b/src/uu/more/Cargo.toml
@@ -28,7 +28,7 @@ redox_termios = "0.1"
 redox_syscall = "0.2"
 
 [target.'cfg(all(unix, not(target_os = "fuchsia")))'.dependencies]
-nix = "0.19"
+nix = "=0.23.1"
 
 [[bin]]
 name = "more"
diff --git a/src/uu/nice/Cargo.toml b/src/uu/nice/Cargo.toml
index b168ed98e..19625b7f2 100644
--- a/src/uu/nice/Cargo.toml
+++ b/src/uu/nice/Cargo.toml
@@ -17,7 +17,7 @@ path = "src/nice.rs"
 [dependencies]
 clap = { version = "2.33", features = ["wrap_help"] }
 libc = "0.2.42"
-nix = "0.20"
+nix = "=0.23.1"
 uucore = { version=">=0.0.10", package="uucore", path="../../uucore" }
 uucore_procs = { version=">=0.0.7", package="uucore_procs", path="../../uucore_procs" }
 
diff --git a/src/uu/tail/Cargo.toml b/src/uu/tail/Cargo.toml
index af36585a2..55878ca63 100644
--- a/src/uu/tail/Cargo.toml
+++ b/src/uu/tail/Cargo.toml
@@ -27,7 +27,7 @@ winapi = { version="0.3", features=["fileapi", "handleapi", "processthreadsapi",
 redox_syscall = "0.2"
 
 [target.'cfg(unix)'.dependencies]
-nix = "0.20"
+nix = "=0.23.1"
 
 [[bin]]
 name = "tail"
diff --git a/src/uu/timeout/Cargo.toml b/src/uu/timeout/Cargo.toml
index 36ad3cb75..87ef01a72 100644
--- a/src/uu/timeout/Cargo.toml
+++ b/src/uu/timeout/Cargo.toml
@@ -17,7 +17,7 @@ path = "src/timeout.rs"
 [dependencies]
 clap = { version = "2.33", features = ["wrap_help"] }
 libc = "0.2.42"
-nix = "0.20.0"
+nix = "=0.23.1"
 uucore = { version=">=0.0.10", package="uucore", path="../../uucore", features=["process", "signals"] }
 uucore_procs = { version=">=0.0.7", package="uucore_procs", path="../../uucore_procs" }
 
diff --git a/src/uu/wc/Cargo.toml b/src/uu/wc/Cargo.toml
index aca35d7d6..ec649820b 100644
--- a/src/uu/wc/Cargo.toml
+++ b/src/uu/wc/Cargo.toml
@@ -23,7 +23,7 @@ utf-8 = "0.7.6"
 unicode-width = "0.1.8"
 
 [target.'cfg(unix)'.dependencies]
-nix = "0.20"
+nix = "=0.23.1"
 libc = "0.2"
 
 [[bin]]
diff --git a/src/uu/yes/Cargo.toml b/src/uu/yes/Cargo.toml
index ad8a87b46..3bf0ad7cb 100644
--- a/src/uu/yes/Cargo.toml
+++ b/src/uu/yes/Cargo.toml
@@ -20,7 +20,7 @@ uucore = { version=">=0.0.10", package="uucore", path="../../uucore", features=[
 uucore_procs = { version=">=0.0.7", package="uucore_procs", path="../../uucore_procs" }
 
 [target.'cfg(any(target_os = "linux", target_os = "android"))'.dependencies]
-nix = "0.20.0"
+nix = "=0.23.1"
 
 [[bin]]
 name = "yes"
diff --git a/src/uucore/Cargo.toml b/src/uucore/Cargo.toml
index 153e3cd57..a97f82133 100644
--- a/src/uucore/Cargo.toml
+++ b/src/uucore/Cargo.toml
@@ -34,7 +34,7 @@ os_display = "0.1.0"
 
 [target.'cfg(unix)'.dependencies]
 walkdir = { version="2.3.2", optional=true }
-nix = { version="0.20", optional=true }
+nix = { version="=0.23.1", optional=true }
 
 [dev-dependencies]
 clap = "2.33.3"