diff --git a/aws/rust-runtime/aws-sigv4/Cargo.toml b/aws/rust-runtime/aws-sigv4/Cargo.toml
index ad1570bb8630728d559e2515d247f10f34c86c95..90cf5f42f308e8285365ddc4b029f5c2bf446039 100644
--- a/aws/rust-runtime/aws-sigv4/Cargo.toml
+++ b/aws/rust-runtime/aws-sigv4/Cargo.toml
@@ -32,7 +32,7 @@ sha2 = "0.10"
 criterion = "0.4"
 bytes = "1"
 httparse = "1.5"
-pretty_assertions = "1.0"
+pretty_assertions = "1.3"
 proptest = "1"
 time = { version = "0.3.4", features = ["parsing"] }
 
diff --git a/rust-runtime/aws-smithy-checksums/Cargo.toml b/rust-runtime/aws-smithy-checksums/Cargo.toml
index b210360d55672a332157fa6daf96558822f2404e..ed770fe7997c1b7309e9fa824629d1312814a09a 100644
--- a/rust-runtime/aws-smithy-checksums/Cargo.toml
+++ b/rust-runtime/aws-smithy-checksums/Cargo.toml
@@ -29,7 +29,7 @@ tracing = "0.1"
 
 [dev-dependencies]
 bytes-utils = "0.1.2"
-pretty_assertions = "1.2"
+pretty_assertions = "1.3"
 tokio = { version = "1.8.4", features = ["macros", "rt"] }
 tracing-test = "0.2.1"
 
diff --git a/rust-runtime/aws-smithy-http/Cargo.toml b/rust-runtime/aws-smithy-http/Cargo.toml
index 23bb28437d4395384913b492df8d98882d887b6b..05e39ee18bf587dfb7d528ab847dea0d528ada6e 100644
--- a/rust-runtime/aws-smithy-http/Cargo.toml
+++ b/rust-runtime/aws-smithy-http/Cargo.toml
@@ -39,7 +39,7 @@ tokio-util = { version = "0.7", optional = true }
 async-stream = "0.3"
 futures-util = "0.3"
 hyper = { version = "0.14.12", features = ["stream"] }
-pretty_assertions = "1.2"
+pretty_assertions = "1.3"
 proptest = "1"
 tokio = { version = "1.8.4", features = [
   "macros",
diff --git a/rust-runtime/aws-smithy-protocol-test/Cargo.toml b/rust-runtime/aws-smithy-protocol-test/Cargo.toml
index b4d5bb516b84b4dbd83bced48ee309f288d3ec68..e18aea12b4057c505121f197f86271fafb2400f5 100644
--- a/rust-runtime/aws-smithy-protocol-test/Cargo.toml
+++ b/rust-runtime/aws-smithy-protocol-test/Cargo.toml
@@ -15,7 +15,7 @@ regex = "1.5"
 # Not perfect for our needs, but good for now
 assert-json-diff = "1.1"
 
-pretty_assertions = "1.0"
+pretty_assertions = "1.3"
 roxmltree = "0.14.1"
 
 
diff --git a/tools/ci-build/changelogger/Cargo.toml b/tools/ci-build/changelogger/Cargo.toml
index fd4d4e5c8c6de659ce14fb6ae4767913552f36a2..8dd09363652a054fc878d7f75dfab704cdf29278 100644
--- a/tools/ci-build/changelogger/Cargo.toml
+++ b/tools/ci-build/changelogger/Cargo.toml
@@ -26,5 +26,5 @@ time = { version = "0.3.9", features = ["local-offset"]}
 toml = "0.5.8"
 
 [dev-dependencies]
-pretty_assertions = "1.2.1"
+pretty_assertions = "1.3"
 tempfile = "3.3.0"
diff --git a/tools/ci-build/crate-hasher/Cargo.toml b/tools/ci-build/crate-hasher/Cargo.toml
index 3456cdff456123b68fcc4ef86e3c6de07c732a82..3f9376443a29e91e480b239d706d4e47b0e24005 100644
--- a/tools/ci-build/crate-hasher/Cargo.toml
+++ b/tools/ci-build/crate-hasher/Cargo.toml
@@ -22,6 +22,6 @@ sha256 = "1.1"
 
 [dev-dependencies]
 flate2 = "1.0"
-pretty_assertions = "1.2"
+pretty_assertions = "1.3"
 tar = "0.4"
 tempdir = "0.3"
diff --git a/tools/ci-build/publisher/Cargo.toml b/tools/ci-build/publisher/Cargo.toml
index fb543a9daa633ddecfd48f1c7919d7ee7ef47cd5..f076cedacf6c2f3a461be96d139a5de00a56d59c 100644
--- a/tools/ci-build/publisher/Cargo.toml
+++ b/tools/ci-build/publisher/Cargo.toml
@@ -38,4 +38,4 @@ tracing-subscriber = { version = "0.3.15", features = ["env-filter"] }
 tempfile = "3.3.0"
 
 [dev-dependencies]
-pretty_assertions = "1.2.1"
+pretty_assertions = "1.3"
diff --git a/tools/ci-build/sdk-versioner/Cargo.toml b/tools/ci-build/sdk-versioner/Cargo.toml
index 13122eecce6552137c51ebf9ee51b52380c1b8fd..4cd1e37af831705c1066b2877a27b898a1cb3dd9 100644
--- a/tools/ci-build/sdk-versioner/Cargo.toml
+++ b/tools/ci-build/sdk-versioner/Cargo.toml
@@ -19,5 +19,5 @@ toml = { version = "0.5.8", features = ["preserve_order"] }
 smithy-rs-tool-common = { version = "0.1", path = "../smithy-rs-tool-common" }
 
 [dev-dependencies]
-pretty_assertions = "1"
+pretty_assertions = "1.3"
 tempfile = "3"
diff --git a/tools/ci-cdk/canary-runner/Cargo.toml b/tools/ci-cdk/canary-runner/Cargo.toml
index aaa0872a0c2e963a90b0d0a4e90f99114dbd211c..d2325d59f9f232a5df81b4f1d0ced082e6485a7b 100644
--- a/tools/ci-cdk/canary-runner/Cargo.toml
+++ b/tools/ci-cdk/canary-runner/Cargo.toml
@@ -33,4 +33,4 @@ tracing-subscriber = { version = "0.3.15", features = ["env-filter", "fmt"] }
 zip = { version = "0.6.2", default-features = false, features = ["deflate"] }
 
 [dev-dependencies]
-pretty_assertions = "1.1"
+pretty_assertions = "1.3"