diff --git a/Cargo.lock b/Cargo.lock
index 6460ebb1c6..b86a12eb6a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1179,7 +1179,7 @@ dependencies = [
  "byteorder",
  "chrono",
  "diesel_derives",
- "ipnetwork",
+ "ipnetwork 0.18.0",
  "itoa 1.0.2",
  "libc",
  "pq-sys",
@@ -2406,6 +2406,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "ipnetwork"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf466541e9d546596ee94f9f69590f89473455f88372423e0008fc1a7daf100e"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "itertools"
 version = "0.10.3"
@@ -2945,7 +2954,7 @@ dependencies = [
  "futures",
  "http",
  "hyper",
- "ipnetwork",
+ "ipnetwork 0.20.0",
  "macaddr",
  "parse-display",
  "progenitor",
@@ -2981,7 +2990,7 @@ dependencies = [
  "futures",
  "http",
  "hyper",
- "ipnetwork",
+ "ipnetwork 0.18.0",
  "macaddr",
  "parse-display",
  "progenitor",
@@ -3079,7 +3088,7 @@ dependencies = [
  "http",
  "httptest",
  "hyper",
- "ipnetwork",
+ "ipnetwork 0.20.0",
  "itertools",
  "lazy_static",
  "libc",
@@ -3181,7 +3190,7 @@ dependencies = [
  "futures",
  "http",
  "internal-dns-client",
- "ipnetwork",
+ "ipnetwork 0.20.0",
  "libc",
  "macaddr",
  "mockall",
diff --git a/common/Cargo.toml b/common/Cargo.toml
index 3b9571cf76..53c2c21393 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -13,7 +13,7 @@ dropshot = {  git = "https://github.com/oxidecomputer/dropshot", branch = "main"
 futures = "0.3.21"
 http = "0.2.7"
 hyper = "0.14"
-ipnetwork = "0.18"
+ipnetwork = "0.20"
 macaddr = { version = "1.0.1", features = [ "serde_std" ] }
 rand = "0.8.4"
 reqwest = { version = "0.11", default-features = false, features = ["rustls-tls", "stream"] }
diff --git a/nexus/Cargo.toml b/nexus/Cargo.toml
index d903185e3e..bb53d58aaa 100644
--- a/nexus/Cargo.toml
+++ b/nexus/Cargo.toml
@@ -26,7 +26,7 @@ hex = "0.4.3"
 http = "0.2.7"
 hyper = "0.14"
 db-macros = { path = "src/db/db-macros" }
-ipnetwork = "0.18"
+ipnetwork = "0.20"
 lazy_static = "1.4.0"
 libc = "0.2.126"
 macaddr = { version = "1.0.1", features = [ "serde_std" ]}
diff --git a/sled-agent/Cargo.toml b/sled-agent/Cargo.toml
index b107e873be..3b932d3387 100644
--- a/sled-agent/Cargo.toml
+++ b/sled-agent/Cargo.toml
@@ -19,7 +19,7 @@ ddm-admin-client = { path = "../ddm-admin-client" }
 dropshot = { git = "https://github.com/oxidecomputer/dropshot", branch = "main", features = [ "usdt-probes" ] }
 futures = "0.3.21"
 internal-dns-client = { path = "../internal-dns-client" }
-ipnetwork = "0.18"
+ipnetwork = "0.20"
 libc = "0.2.126"
 macaddr = { version = "1.0.1", features = [ "serde_std" ] }
 nexus-client = { path = "../nexus-client" }