diff --git a/Cargo.toml b/Cargo.toml
index 6e2af51bb1..88fd0c2b51 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,3 +5,32 @@ members = [
     "halo2_poseidon",
     "halo2_proofs",
 ]
+
+[workspace.dependencies]
+arrayvec = "0.7.0"
+assert_matches = "1.5"
+backtrace = "0.3"
+bitvec = { version = "1", default-features = false }
+blake2b_simd = "1"
+criterion = "0.3"
+dashmap = ">=5, <5.5.0"
+ff = { version = "0.13", default-features = false }
+group = "0.13"
+gumdrop = "0.8"
+halo2_legacy_pdqsort = "0.1.0"
+halo2_poseidon = { version = "0.1", path = "halo2_poseidon", default-features = false }
+halo2_proofs = { version = "0.3", path = "halo2_proofs", default-features = false }
+image = ">=0.24, <0.24.5"
+lazy_static = "1"
+maybe-rayon = { version = "0.1.0", default-features = false }
+pasta_curves = "0.5"
+plotters = { version = "0.3.0", default-features = false }
+proptest = "1.0.0"
+rand = "0.8"
+rand_core = { version = "0.6", default-features = false }
+sinsemilla = "0.1"
+subtle = "2.3"
+tabbycat = "0.1"
+tempfile = ">=3, <3.7.0"
+tracing = "0.1"
+uint = "0.9.2"
diff --git a/halo2/Cargo.toml b/halo2/Cargo.toml
index ba8c53a24b..ba59578635 100644
--- a/halo2/Cargo.toml
+++ b/halo2/Cargo.toml
@@ -19,7 +19,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs", "--html-in-header", "katex-header.html"]
 
 [dependencies]
-halo2_proofs = { version = "0.3", path = "../halo2_proofs", default-features = false }
+halo2_proofs = { workspace = true }
 
 [lib]
 bench = false
diff --git a/halo2_gadgets/Cargo.toml b/halo2_gadgets/Cargo.toml
index b8c458c548..f3f51c063b 100644
--- a/halo2_gadgets/Cargo.toml
+++ b/halo2_gadgets/Cargo.toml
@@ -22,28 +22,28 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs", "--html-in-header", "katex-header.html"]
 
 [dependencies]
-arrayvec = "0.7.0"
-bitvec = "1"
-ff = "0.13"
-group = "0.13"
-halo2_poseidon = { version = "0.1", path = "../halo2_poseidon", default-features = false }
-halo2_proofs = { version = "0.3", path = "../halo2_proofs", default-features = false }
-lazy_static = "1"
-pasta_curves = "0.5"
-proptest = { version = "1.0.0", optional = true }
-rand = "0.8"
-sinsemilla = "0.1"
-subtle = "2.3"
-uint = "0.9.2" # MSRV 1.56.1
+arrayvec = { workspace = true }
+bitvec = { workspace = true }
+ff = { workspace = true }
+group = { workspace = true }
+halo2_poseidon = { workspace = true }
+halo2_proofs = { workspace = true }
+lazy_static = { workspace = true }
+pasta_curves = { workspace = true }
+proptest = { workspace = true, optional = true }
+rand = { workspace = true }
+sinsemilla = { workspace = true }
+subtle = { workspace = true }
+uint = { workspace = true } # MSRV 1.56.1
 
 # Developer tooling dependencies
-plotters = { version = "0.3.0", default-features = false, optional = true }
+plotters = { workspace = true, optional = true }
 
 [dev-dependencies]
-criterion = "0.3"
-halo2_poseidon = { version = "0.1", path = "../halo2_poseidon", default-features = false, features = ["test-dependencies"] }
-proptest = "1.0.0"
-sinsemilla = { version = "0.1", features = ["test-dependencies"] }
+criterion = { workspace = true }
+halo2_poseidon = { workspace = true, features = ["test-dependencies"] }
+proptest = { workspace = true }
+sinsemilla = { workspace = true, features = ["test-dependencies"] }
 
 [target.'cfg(unix)'.dev-dependencies]
 inferno = ">=0.11, <0.11.5" # MSRV 1.59
diff --git a/halo2_poseidon/Cargo.toml b/halo2_poseidon/Cargo.toml
index 963f4c0ef7..d742f74426 100644
--- a/halo2_poseidon/Cargo.toml
+++ b/halo2_poseidon/Cargo.toml
@@ -15,10 +15,10 @@ readme = "README.md"
 categories = ["cryptography"]
 
 [dependencies]
-bitvec = { version = "1", default-features = false }
-ff = { version = "0.13", default-features = false }
-group = "0.13"
-pasta_curves = "0.5"
+bitvec = { workspace = true }
+ff = { workspace = true }
+group = { workspace = true }
+pasta_curves = { workspace = true }
 
 [features]
 test-dependencies = []
diff --git a/halo2_proofs/Cargo.toml b/halo2_proofs/Cargo.toml
index 4853999ce9..24c1ec9042 100644
--- a/halo2_proofs/Cargo.toml
+++ b/halo2_proofs/Cargo.toml
@@ -44,33 +44,33 @@ name = "fft"
 harness = false
 
 [dependencies]
-backtrace = { version = "0.3", optional = true }
-ff = "0.13"
-group = "0.13"
-pasta_curves = "0.5"
-rand_core = { version = "0.6", default-features = false }
-tracing = "0.1"
-blake2b_simd = "1"
-maybe-rayon = {version = "0.1.0", default-features = false}
+backtrace = { workspace = true, optional = true }
+ff = { workspace = true }
+group = { workspace = true }
+pasta_curves = { workspace = true }
+rand_core = { workspace = true }
+tracing = { workspace = true }
+blake2b_simd = { workspace = true }
+maybe-rayon = { workspace = true }
 
 # Developer tooling dependencies
-plotters = { version = "0.3.0", default-features = false, optional = true }
-tabbycat = { version = "0.1", features = ["attributes"], optional = true }
+plotters = { workspace = true, optional = true }
+tabbycat = { workspace = true, features = ["attributes"], optional = true }
 
 # Legacy circuit compatibility
-halo2_legacy_pdqsort = { version = "0.1.0", optional = true }
+halo2_legacy_pdqsort = { workspace = true, optional = true }
 
 [dev-dependencies]
-assert_matches = "1.5"
-criterion = "0.3"
-gumdrop = "0.8"
-proptest = "1"
-rand_core = { version = "0.6", default-features = false, features = ["getrandom"] }
+assert_matches = { workspace = true }
+criterion = { workspace = true }
+gumdrop = { workspace = true }
+proptest = { workspace = true }
+rand_core = { workspace = true, features = ["getrandom"] }
 
 # Indirect dev-dependencies that we pin to preserve MSRV in CI checks.
-dashmap = ">=5, <5.5.0" # dashmap 5.5.0 has MSRV 1.64
-image = ">=0.24, <0.24.5" # image 0.24.5 has MSRV 1.61
-tempfile = ">=3, <3.7.0" # tempfile 3.7.0 has MSRV 1.63
+dashmap = { workspace = true } # dashmap 5.5.0 has MSRV 1.64
+image = { workspace = true } # image 0.24.5 has MSRV 1.61
+tempfile = { workspace = true } # tempfile 3.7.0 has MSRV 1.63
 
 [target.'cfg(all(target_arch = "wasm32", target_os = "unknown"))'.dev-dependencies]
 getrandom = { version = "0.2", features = ["js"] }