diff --git a/Cargo.lock b/Cargo.lock
index 2faaf172e04..9d656e23a47 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -150,7 +150,7 @@ checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
 [[package]]
 name = "chalk"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "chalk-derive",
  "chalk-engine",
@@ -172,7 +172,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-derive"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -182,7 +182,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-engine"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "chalk-derive",
  "chalk-integration",
@@ -194,7 +194,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-integration"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "chalk-derive",
  "chalk-engine",
@@ -209,7 +209,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-ir"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "chalk-derive",
  "lazy_static",
@@ -217,7 +217,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-parse"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "lalrpop",
  "lalrpop-util",
@@ -227,7 +227,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-recursive"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "chalk-derive",
  "chalk-integration",
@@ -239,7 +239,7 @@ dependencies = [
 
 [[package]]
 name = "chalk-solve"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 dependencies = [
  "chalk-derive",
  "chalk-integration",
diff --git a/Cargo.toml b/Cargo.toml
index 4286d462b39..46fbf297bc9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "Model of the Rust trait system"
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
@@ -21,13 +21,13 @@ salsa = "0.15.0"
 serde = "1.0"
 serde_derive = "1.0"
 
-chalk-derive = { version = "0.31.0-dev.0", path = "chalk-derive" }
-chalk-engine = { version = "0.31.0-dev.0", path = "chalk-engine" }
-chalk-ir = { version = "0.31.0-dev.0", path = "chalk-ir" }
-chalk-solve = { version = "0.31.0-dev.0", path = "chalk-solve" }
-chalk-recursive = { version = "0.31.0-dev.0", path = "chalk-recursive" }
-chalk-parse = { version = "0.31.0-dev.0", path = "chalk-parse" }
-chalk-integration = { version = "0.31.0-dev.0", path = "chalk-integration" }
+chalk-derive = { version = "=0.31.0", path = "chalk-derive" }
+chalk-engine = { version = "=0.31.0", path = "chalk-engine" }
+chalk-ir = { version = "=0.31.0", path = "chalk-ir" }
+chalk-solve = { version = "=0.31.0", path = "chalk-solve" }
+chalk-recursive = { version = "=0.31.0", path = "chalk-recursive" }
+chalk-parse = { version = "=0.31.0", path = "chalk-parse" }
+chalk-integration = { version = "=0.31.0", path = "chalk-integration" }
 
 [workspace]
 
diff --git a/RELEASES.md b/RELEASES.md
index 9a28b483a21..f78e348dc97 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+# Release 0.31.0
+
 # Release 0.30.0
 
 # Release 0.29.0
diff --git a/chalk-derive/Cargo.toml b/chalk-derive/Cargo.toml
index 2faa42ecbd5..e3f04bc5cd5 100644
--- a/chalk-derive/Cargo.toml
+++ b/chalk-derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-derive"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "A helper crate for use by chalk crates for `derive` macros."
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
diff --git a/chalk-engine/Cargo.toml b/chalk-engine/Cargo.toml
index bb5f9a64fb3..6f60b79d1cd 100644
--- a/chalk-engine/Cargo.toml
+++ b/chalk-engine/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-engine"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "Core trait engine from Chalk project"
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
@@ -16,9 +16,9 @@ default = []
 rustc-hash = { version = "1.1.0" }
 tracing = "0.1"
 
-chalk-derive = { version = "0.31.0-dev.0", path = "../chalk-derive" }
-chalk-ir = { version = "0.31.0-dev.0", path = "../chalk-ir" }
-chalk-solve = { version = "0.31.0-dev.0", path = "../chalk-solve" }
+chalk-derive = { version = "=0.31.0", path = "../chalk-derive" }
+chalk-ir = { version = "=0.31.0", path = "../chalk-ir" }
+chalk-solve = { version = "=0.31.0", path = "../chalk-solve" }
 
 [dev-dependencies]
 chalk-integration = { path = "../chalk-integration" }
diff --git a/chalk-integration/Cargo.toml b/chalk-integration/Cargo.toml
index cefd452ebc4..0ec9bb6d1cb 100644
--- a/chalk-integration/Cargo.toml
+++ b/chalk-integration/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-integration"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 license = "Apache-2.0/MIT"
 description = "Sample solver setup for Chalk"
 authors = ["Rust Compiler Team", "Chalk developers"]
@@ -14,9 +14,9 @@ string_cache = "0.8.0"
 salsa = "0.15.0"
 tracing = "0.1"
 
-chalk-derive = { version = "0.31.0-dev.0", path = "../chalk-derive" }
-chalk-ir = { version = "0.31.0-dev.0", path = "../chalk-ir" }
-chalk-solve = { version = "0.31.0-dev.0", path = "../chalk-solve" }
-chalk-recursive = { version = "0.31.0-dev.0", path = "../chalk-recursive" }
-chalk-engine = { version = "0.31.0-dev.0", path = "../chalk-engine" }
-chalk-parse = { version = "0.31.0-dev.0", path = "../chalk-parse" }
+chalk-derive = { version = "=0.31.0", path = "../chalk-derive" }
+chalk-ir = { version = "=0.31.0", path = "../chalk-ir" }
+chalk-solve = { version = "=0.31.0", path = "../chalk-solve" }
+chalk-recursive = { version = "=0.31.0", path = "../chalk-recursive" }
+chalk-engine = { version = "=0.31.0", path = "../chalk-engine" }
+chalk-parse = { version = "=0.31.0", path = "../chalk-parse" }
diff --git a/chalk-ir/Cargo.toml b/chalk-ir/Cargo.toml
index c556940fd39..df895f17045 100644
--- a/chalk-ir/Cargo.toml
+++ b/chalk-ir/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-ir"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "Chalk's internal representation of types, goals, and clauses"
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
@@ -11,4 +11,4 @@ edition = "2018"
 
 [dependencies]
 lazy_static = "1.4.0"
-chalk-derive = { version = "0.31.0-dev.0", path = "../chalk-derive" }
+chalk-derive = { version = "=0.31.0", path = "../chalk-derive" }
diff --git a/chalk-parse/Cargo.toml b/chalk-parse/Cargo.toml
index 0af605db885..673dd931912 100644
--- a/chalk-parse/Cargo.toml
+++ b/chalk-parse/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-parse"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "Parser for the Chalk project"
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
diff --git a/chalk-recursive/Cargo.toml b/chalk-recursive/Cargo.toml
index 8551d795c35..4db266a396b 100644
--- a/chalk-recursive/Cargo.toml
+++ b/chalk-recursive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-recursive"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "Recursive solver for the Chalk project"
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
@@ -16,9 +16,9 @@ default = []
 rustc-hash = { version = "1.1.0" }
 tracing = "0.1"
 
-chalk-derive = { version = "0.31.0-dev.0", path = "../chalk-derive" }
-chalk-ir = { version = "0.31.0-dev.0", path = "../chalk-ir" }
-chalk-solve = { version = "0.31.0-dev.0", path = "../chalk-solve" }
+chalk-derive = { version = "=0.31.0", path = "../chalk-derive" }
+chalk-ir = { version = "=0.31.0", path = "../chalk-ir" }
+chalk-solve = { version = "=0.31.0", path = "../chalk-solve" }
 
 [dev-dependencies]
 chalk-integration = { path = "../chalk-integration" }
diff --git a/chalk-solve/Cargo.toml b/chalk-solve/Cargo.toml
index 8b6c6183b55..a0685158a1c 100644
--- a/chalk-solve/Cargo.toml
+++ b/chalk-solve/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chalk-solve"
-version = "0.31.0-dev.0"
+version = "0.31.0"
 description = "Combines the chalk-engine with chalk-ir"
 license = "Apache-2.0/MIT"
 authors = ["Rust Compiler Team", "Chalk developers"]
@@ -18,8 +18,8 @@ tracing-subscriber = { version = "0.2", optional = true }
 tracing-tree = { version = "0.1.4", optional = true }
 rustc-hash = { version = "1.1.0" }
 
-chalk-derive = { version = "0.31.0-dev.0", path = "../chalk-derive" }
-chalk-ir = { version = "0.31.0-dev.0", path = "../chalk-ir" }
+chalk-derive = { version = "=0.31.0", path = "../chalk-derive" }
+chalk-ir = { version = "=0.31.0", path = "../chalk-ir" }
 
 [dev-dependencies]
 chalk-integration = { path = "../chalk-integration" }