diff --git a/Cargo.lock b/Cargo.lock
index dca265b02ae84..13c6ea9770a83 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -541,7 +541,7 @@ dependencies = [
  "expr",
  "futures",
  "interchange",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "log",
  "mz-avro",
@@ -632,7 +632,7 @@ dependencies = [
  "clap",
  "criterion-plot",
  "csv",
- "itertools",
+ "itertools 0.9.0",
  "lazy_static",
  "num-traits",
  "oorandom",
@@ -654,7 +654,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e022feadec601fba1649cfa83586381a4ad31c6bf3a9ab7d408118b05dd9889d"
 dependencies = [
  "cast",
- "itertools",
+ "itertools 0.9.0",
 ]
 
 [[package]]
@@ -765,7 +765,7 @@ dependencies = [
  "globset",
  "inotify",
  "interchange",
- "itertools",
+ "itertools 0.10.5",
  "kafka-util",
  "lazy_static",
  "log",
@@ -1068,7 +1068,7 @@ dependencies = [
  "enum-iterator",
  "hex",
  "hmac",
- "itertools",
+ "itertools 0.10.5",
  "md-5",
  "num_enum",
  "ordered-float",
@@ -1687,7 +1687,7 @@ dependencies = [
  "differential-dataflow",
  "futures",
  "hex",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "log",
  "mz-avro",
@@ -1723,6 +1723,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "0.4.6"
@@ -1947,7 +1956,7 @@ dependencies = [
  "hyper",
  "hyper-openssl",
  "include_dir",
- "itertools",
+ "itertools 0.10.5",
  "jemallocator",
  "krb5-src",
  "lazy_static",
@@ -2073,7 +2082,7 @@ name = "metabase-smoketest"
 version = "0.0.0"
 dependencies = [
  "anyhow",
- "itertools",
+ "itertools 0.10.5",
  "log",
  "metabase",
  "ore",
@@ -2134,7 +2143,7 @@ dependencies = [
  "digest",
  "enum-kinds",
  "flate2",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "log",
  "md-5",
@@ -2642,7 +2651,7 @@ dependencies = [
  "dataflow-types",
  "expr",
  "futures",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "log",
  "openssl",
@@ -3294,7 +3303,7 @@ dependencies = [
  "enum-kinds",
  "fast-float",
  "hex",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "num-traits",
  "ordered-float",
@@ -3832,7 +3841,7 @@ dependencies = [
  "futures",
  "globset",
  "interchange",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "log",
  "mz-avro",
@@ -3860,7 +3869,7 @@ version = "0.0.0"
 dependencies = [
  "anyhow",
  "datadriven",
- "itertools",
+ "itertools 0.10.5",
  "lazy_static",
  "log",
  "matches",
@@ -4174,7 +4183,7 @@ dependencies = [
  "coord",
  "futures",
  "interchange",
- "itertools",
+ "itertools 0.10.5",
  "kafka-util",
  "krb5-src",
  "lazy_static",
@@ -4507,7 +4516,7 @@ dependencies = [
  "datadriven",
  "dataflow-types",
  "expr",
- "itertools",
+ "itertools 0.10.5",
  "repr",
 ]
 
@@ -4637,7 +4646,7 @@ dependencies = [
  "anyhow",
  "datadriven",
  "fstrings",
- "itertools",
+ "itertools 0.10.5",
  "ore",
  "quote",
  "syn",
@@ -4840,6 +4849,6 @@ checksum = "ec24a9273d24437afb8e71b16f3d9a5d569193cccdb7896213b59f552f387674"
 dependencies = [
  "cc",
  "glob",
- "itertools",
+ "itertools 0.9.0",
  "libc",
 ]
diff --git a/src/avro/Cargo.toml b/src/avro/Cargo.toml
index f901e451f8e3a..f7aa6969c9546 100644
--- a/src/avro/Cargo.toml
+++ b/src/avro/Cargo.toml
@@ -20,7 +20,7 @@ crc = { version = "1.3.0", optional = true }
 digest = "0.9.0"
 enum-kinds = "0.5.0"
 flate2 = "1.0.20"
-itertools = "0.9.0"
+itertools = "0.10.5"
 log = "0.4.13"
 rand = "0.8.3"
 regex = "1.4.3"
diff --git a/src/coord/Cargo.toml b/src/coord/Cargo.toml
index cc7393c324ceb..b62eef713e774 100644
--- a/src/coord/Cargo.toml
+++ b/src/coord/Cargo.toml
@@ -22,7 +22,7 @@ differential-dataflow = { git = "https://github.com/TimelyDataflow/differential-
 expr = { path = "../expr" }
 futures = "0.3.12"
 interchange = { path = "../interchange" }
-itertools = "0.9.0"
+itertools = "0.10.5"
 lazy_static = "1.4.0"
 log = "0.4.13"
 mz-avro = { path = "../avro", features = ["snappy"] }
diff --git a/src/dataflow/Cargo.toml b/src/dataflow/Cargo.toml
index 50a8f3b066a9e..e59878bc7b16e 100644
--- a/src/dataflow/Cargo.toml
+++ b/src/dataflow/Cargo.toml
@@ -23,7 +23,7 @@ futures = "0.3.12"
 globset = "0.4.0"
 inotify = "0.9.2"
 interchange = { path = "../interchange" }
-itertools = "0.9.0"
+itertools = "0.10.5"
 kafka-util = { path = "../kafka-util" }
 lazy_static = "1.4.0"
 log = "0.4.13"
diff --git a/src/expr/Cargo.toml b/src/expr/Cargo.toml
index c9e2a33594282..ef7a3f3d0a896 100644
--- a/src/expr/Cargo.toml
+++ b/src/expr/Cargo.toml
@@ -13,7 +13,7 @@ csv = "1.1.0"
 encoding = "0.2.0"
 enum-iterator = "0.6.0"
 hmac = "0.10.0"
-itertools = "0.9.0"
+itertools = "0.10.5"
 hex = "0.4.2"
 md-5 = "0.9.0"
 num_enum = "0.5.1"
diff --git a/src/interchange/Cargo.toml b/src/interchange/Cargo.toml
index c1a99dc75b3d0..1ff854585b30f 100644
--- a/src/interchange/Cargo.toml
+++ b/src/interchange/Cargo.toml
@@ -21,7 +21,7 @@ differential-dataflow = { git = "https://github.com/TimelyDataflow/differential-
 futures = "0.3.12"
 timely = { git = "https://github.com/TimelyDataflow/timely-dataflow", default-features = false, features = ["bincode"] }
 hex = "0.4.0"
-itertools = "0.9.0"
+itertools = "0.10.5"
 lazy_static = "1.4.0"
 log = "0.4.13"
 mz-avro = { path = "../avro", features = ["snappy"] }
diff --git a/src/materialized/Cargo.toml b/src/materialized/Cargo.toml
index 7a29c26b04cdd..115a9e13676d1 100644
--- a/src/materialized/Cargo.toml
+++ b/src/materialized/Cargo.toml
@@ -46,7 +46,7 @@ hex = "0.4.0"
 hyper = { version = "0.14.0", features = ["http1", "server"] }
 hyper-openssl = "0.9.1"
 include_dir = "0.6.0"
-itertools = "0.9.0"
+itertools = "0.10.5"
 krb5-src = { version = "0.2.3", features = ["binaries"] }
 lazy_static = "1.4.0"
 libc = "0.2.86"
@@ -100,7 +100,7 @@ bytes = "1.0.1"
 chrono = { version = "0.4.0", default-features = false, features = ["std"] }
 datadriven = "0.5.0"
 fallible-iterator = "0.2.0"
-itertools = "0.9.0"
+itertools = "0.10.5"
 pgrepr = { path = "../pgrepr" }
 pgtest = { path = "../pgtest" }
 postgres = { version = "0.19.0", features = ["with-chrono-0_4"] }
diff --git a/src/pgwire/Cargo.toml b/src/pgwire/Cargo.toml
index db6ebdd04e385..ad74d34e30cee 100644
--- a/src/pgwire/Cargo.toml
+++ b/src/pgwire/Cargo.toml
@@ -15,7 +15,7 @@ coord = { path = "../coord" }
 dataflow-types = { path = "../dataflow-types" }
 expr = { path = "../expr" }
 futures = "0.3.12"
-itertools = "0.9.0"
+itertools = "0.10.5"
 lazy_static = "1.4.0"
 log = "0.4.13"
 openssl = { version = "0.10.32", features = ["vendored"] }
diff --git a/src/repr/Cargo.toml b/src/repr/Cargo.toml
index 71f548fc3f9e3..227b53ca8440e 100644
--- a/src/repr/Cargo.toml
+++ b/src/repr/Cargo.toml
@@ -21,7 +21,7 @@ chrono-tz = { version = "0.5.0", features = ["serde"] }
 enum-kinds = "0.5.0"
 fast-float = "0.2.0"
 hex = "0.4.2"
-itertools = "0.9.0"
+itertools = "0.10.5"
 lazy_static = "1.4.0"
 num-traits = "0.2.14"
 ordered-float = { version = "2.1.1", features = ["serde"] }
diff --git a/src/sql-parser/Cargo.toml b/src/sql-parser/Cargo.toml
index e3224f51c7004..cee34a888b104 100644
--- a/src/sql-parser/Cargo.toml
+++ b/src/sql-parser/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 publish = false
 
 [dependencies]
-itertools = "0.9.0"
+itertools = "0.10.5"
 lazy_static = "1.4.0"
 log = "0.4.13"
 ore = { path = "../ore" }
diff --git a/src/sql/Cargo.toml b/src/sql/Cargo.toml
index aa00496ffccf9..14925df1fcd50 100644
--- a/src/sql/Cargo.toml
+++ b/src/sql/Cargo.toml
@@ -18,7 +18,7 @@ expr = { path = "../expr" }
 futures = "0.3.12"
 globset = "0.4.0"
 interchange = { path = "../interchange" }
-itertools = "0.9.0"
+itertools = "0.10.5"
 lazy_static = "1.4.0"
 log = "0.4.13"
 mz-avro = { path = "../avro", features = ["snappy"] }
diff --git a/src/testdrive/Cargo.toml b/src/testdrive/Cargo.toml
index c06f908796d44..feaa9f5e15933 100644
--- a/src/testdrive/Cargo.toml
+++ b/src/testdrive/Cargo.toml
@@ -17,7 +17,7 @@ chrono = { version = "0.4.0", default-features = false, features = ["std"] }
 coord = { path = "../coord" }
 futures = "0.3.12"
 interchange = { path = "../interchange" }
-itertools = "0.9.0"
+itertools = "0.10.5"
 kafka-util = { path = "../kafka-util" }
 krb5-src = { version = "0.2.3", features = ["binaries"] }
 lazy_static = "1.4.0"
diff --git a/src/transform/Cargo.toml b/src/transform/Cargo.toml
index 4bea7cd629c5e..bb62b9986b057 100644
--- a/src/transform/Cargo.toml
+++ b/src/transform/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 [dependencies]
 dataflow-types = { path = "../dataflow-types" }
 expr = { path = "../expr" }
-itertools = "0.9.0"
+itertools = "0.10.5"
 repr = { path = "../repr" }
 
 [dev-dependencies]
diff --git a/src/walkabout/Cargo.toml b/src/walkabout/Cargo.toml
index 3f3e41eacdc77..db14046653db3 100644
--- a/src/walkabout/Cargo.toml
+++ b/src/walkabout/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 [dependencies]
 anyhow = "1.0.38"
 fstrings = "0.2.3"
-itertools = "0.9.0"
+itertools = "0.10.5"
 ore = { path = "../ore" }
 quote = "1.0.9"
 syn = { version = "1.0.55", features = ["extra-traits", "full", "parsing"] }
diff --git a/test/metabase/smoketest/Cargo.toml b/test/metabase/smoketest/Cargo.toml
index 98a350c825c8b..74eb902ae05b7 100644
--- a/test/metabase/smoketest/Cargo.toml
+++ b/test/metabase/smoketest/Cargo.toml
@@ -7,7 +7,7 @@ publish = false
 
 [dependencies]
 anyhow = "1.0.38"
-itertools = "0.9.0"
+itertools = "0.10.5"
 log = "0.4.13"
 metabase = { path = "../../../src/metabase" }
 ore = { path = "../../../src/ore" }