diff --git a/Cargo.lock b/Cargo.lock
index 4af27aca25972..d079259cf00f0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4320,14 +4320,15 @@ dependencies = [
 
 [[package]]
 name = "insta"
-version = "1.44.3"
+version = "1.45.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5c943d4415edd8153251b6f197de5eb1640e56d84e8d9159bea190421c73698"
+checksum = "983e3b24350c84ab8a65151f537d67afbbf7153bb9f1110e03e9fa9b07f67a5c"
 dependencies = [
  "console 0.15.11",
  "once_cell",
  "serde",
  "similar",
+ "tempfile",
 ]
 
 [[package]]
diff --git a/src/catalog/Cargo.toml b/src/catalog/Cargo.toml
index f1ec1a4ad73fc..f0b4458fdaae2 100644
--- a/src/catalog/Cargo.toml
+++ b/src/catalog/Cargo.toml
@@ -72,7 +72,7 @@ workspace-hack = { version = "0.0.0", path = "../workspace-hack", optional = tru
 
 [dev-dependencies]
 base64 = "0.22.1"
-insta = "1.44"
+insta = "1.45"
 
 [features]
 default = ["workspace-hack"]
diff --git a/src/environmentd/Cargo.toml b/src/environmentd/Cargo.toml
index 430a9efa69263..c759813598e3a 100644
--- a/src/environmentd/Cargo.toml
+++ b/src/environmentd/Cargo.toml
@@ -137,7 +137,7 @@ datadriven = "0.9.0"
 fallible-iterator = "0.2.0"
 flate2 = "1.1.5"
 http-body-util = "0.1.3"
-insta = { version = "1.44", features = ["json"] }
+insta = { version = "1.45", features = ["json"] }
 itertools = "0.14.0"
 jsonwebtoken = "9.3.1"
 mz-environmentd = { path = "../environmentd", features = ["test"] }
diff --git a/src/expr-derive-impl/Cargo.toml b/src/expr-derive-impl/Cargo.toml
index 81336bf92ddd5..ff3fa71548c7c 100644
--- a/src/expr-derive-impl/Cargo.toml
+++ b/src/expr-derive-impl/Cargo.toml
@@ -11,7 +11,7 @@ workspace = true
 
 [dependencies]
 darling = "0.20.11"
-insta = { version = "1.44", optional = true, features = ["serde"] }
+insta = { version = "1.45", optional = true, features = ["serde"] }
 prettyplease = { version = "0.2", optional = true }
 proc-macro2 = "1.0"
 quote = "1.0"
@@ -19,7 +19,7 @@ syn = { version = "2.0", features = ["extra-traits"] }
 workspace-hack = { version = "0.0.0", path = "../workspace-hack", optional = true }
 
 [dev-dependencies]
-insta = { version = "1.44", features = ["serde"] }
+insta = { version = "1.45", features = ["serde"] }
 mz-ore = { path = "../ore", features = ["test"] }
 prettyplease = "0.2"
 
diff --git a/src/expr/Cargo.toml b/src/expr/Cargo.toml
index 2593787892593..391102bead544 100644
--- a/src/expr/Cargo.toml
+++ b/src/expr/Cargo.toml
@@ -73,7 +73,7 @@ smallvec = { version = "1.15.1" }
 [dev-dependencies]
 criterion = { version = "0.8.1" }
 datadriven = "0.9.0"
-insta = "1.44"
+insta = "1.45"
 mz-expr-derive-impl = { path = "../expr-derive-impl", features = ["test"] }
 mz-expr-test-util = { path = "../expr-test-util" }
 mz-ore = { path = "../ore" }
diff --git a/src/fivetran-destination/Cargo.toml b/src/fivetran-destination/Cargo.toml
index fdd404e172dd5..2b13271a13f10 100644
--- a/src/fivetran-destination/Cargo.toml
+++ b/src/fivetran-destination/Cargo.toml
@@ -40,7 +40,7 @@ tracing-subscriber = "0.3.22"
 workspace-hack = { version = "0.0.0", path = "../workspace-hack", optional = true }
 
 [dev-dependencies]
-insta = "1.44"
+insta = "1.45"
 
 [build-dependencies]
 mz-build-tools = { path = "../build-tools", default-features = false, features = ["protobuf-src"] }
diff --git a/src/repr/Cargo.toml b/src/repr/Cargo.toml
index 2c9db4b2dfb4a..32fda3c2aaf55 100644
--- a/src/repr/Cargo.toml
+++ b/src/repr/Cargo.toml
@@ -85,7 +85,7 @@ workspace-hack = { version = "0.0.0", path = "../workspace-hack", optional = tru
 [dev-dependencies]
 bincode = "1.3.3"
 criterion = { version = "0.8.1" }
-insta = { version = "1.44.3", features = ["json"] }
+insta = { version = "1.45.1", features = ["json"] }
 mz-persist = { path = "../persist" }
 rand = "0.9.2"
 
diff --git a/src/storage-types/Cargo.toml b/src/storage-types/Cargo.toml
index 3222eb5cec1e5..9523fbadff716 100644
--- a/src/storage-types/Cargo.toml
+++ b/src/storage-types/Cargo.toml
@@ -81,7 +81,7 @@ iceberg-catalog-rest = "0.7.0"
 
 [dev-dependencies]
 criterion = { version = "0.8.1" }
-insta = { version = "1.44", features = ["json"] }
+insta = { version = "1.45", features = ["json"] }
 mz-persist = { path = "../persist" }
 rand = "0.9.2"
 
diff --git a/src/workspace-hack/Cargo.toml b/src/workspace-hack/Cargo.toml
index bc92000a95ed9..c78c31a072f37 100644
--- a/src/workspace-hack/Cargo.toml
+++ b/src/workspace-hack/Cargo.toml
@@ -79,7 +79,7 @@ half = { version = "2.6.0", features = ["num-traits"] }
 hashbrown = { version = "0.14.5", default-features = false, features = ["allocator-api2", "inline-more", "raw"] }
 hyper-582f2526e08bb6a0 = { package = "hyper", version = "0.14.27", features = ["client", "http1", "http2", "stream", "tcp"] }
 hyper-util = { version = "0.1.19", features = ["client-legacy", "server-auto", "service", "tracing"] }
-insta = { version = "1.44.3", features = ["json"] }
+insta = { version = "1.45.1", features = ["json"] }
 itertools = { version = "0.13.0" }
 libc = { version = "0.2.178", features = ["extra_traits", "use_std"] }
 libz-sys = { version = "1.1.23", features = ["static"] }
@@ -225,7 +225,7 @@ half = { version = "2.6.0", features = ["num-traits"] }
 hashbrown = { version = "0.14.5", default-features = false, features = ["allocator-api2", "inline-more", "raw"] }
 hyper-582f2526e08bb6a0 = { package = "hyper", version = "0.14.27", features = ["client", "http1", "http2", "stream", "tcp"] }
 hyper-util = { version = "0.1.19", features = ["client-legacy", "server-auto", "service", "tracing"] }
-insta = { version = "1.44.3", features = ["json"] }
+insta = { version = "1.45.1", features = ["json"] }
 itertools = { version = "0.13.0" }
 libc = { version = "0.2.178", features = ["extra_traits", "use_std"] }
 libz-sys = { version = "1.1.23", features = ["static"] }