diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d26d95059..614e36f51 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,7 +6,18 @@ on:
   pull_request:
 
 jobs:
+  msrv:
+    name: Determine MSRV
+    runs-on: ubuntu-latest
+    outputs:
+      msrv: ${{ steps.msrv.outputs.msrv }}
+    steps:
+      - uses: actions/checkout@v6
+      - id: msrv
+        run: echo "msrv=$(grep '^rust-version' Cargo.toml | sed 's/.*"\(.*\)"/\1/')" >> "$GITHUB_OUTPUT"
+
   test:
+    needs: msrv
     strategy:
       matrix:
         os:
@@ -15,7 +26,7 @@ jobs:
           - windows
         toolchain:
           - stable
-          - 1.86
+          - ${{ needs.msrv.outputs.msrv }}
     name: cargo test on ${{ matrix.os }}, rust ${{ matrix.toolchain }}
     runs-on: ${{ matrix.os }}-latest
     steps:
diff --git a/Cargo.toml b/Cargo.toml
index 25dfb3919..f309dd658 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ resolver = "2"
 
 [workspace.package]
 edition = "2021"
+rust-version = "1.86"
 
 [workspace.dependencies]
 columnar = "0.11"
diff --git a/bytes/Cargo.toml b/bytes/Cargo.toml
index 2251a64c0..5466ffcfc 100644
--- a/bytes/Cargo.toml
+++ b/bytes/Cargo.toml
@@ -2,7 +2,8 @@
 name = "timely_bytes"
 version = "0.26.1"
 authors = ["Frank McSherry <fmcsherry@me.com>"]
-edition = "2018"
+edition.workspace = true
+rust-version.workspace = true
 
 description = "Disjoint mutable byte slices from a common allocation"
 
diff --git a/communication/Cargo.toml b/communication/Cargo.toml
index a6c967283..cf0451f56 100644
--- a/communication/Cargo.toml
+++ b/communication/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.26.1"
 authors = ["Frank McSherry <fmcsherry@me.com>"]
 description = "Communication layer for timely dataflow"
 edition.workspace = true
+rust-version.workspace = true
 
 # These URLs point to more information about the repository
 
diff --git a/container/Cargo.toml b/container/Cargo.toml
index 34cbf74e9..2078f0ff8 100644
--- a/container/Cargo.toml
+++ b/container/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.26.1"
 description = "Container abstractions for Timely"
 license = "MIT"
 edition.workspace = true
+rust-version.workspace = true
 
 [lints]
 workspace = true
diff --git a/logging/Cargo.toml b/logging/Cargo.toml
index acb37a1c6..91bc2337b 100644
--- a/logging/Cargo.toml
+++ b/logging/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.26.1"
 authors = ["Frank McSherry <fmcsherry@me.com>"]
 description = "Common timely logging infrastructure"
 edition.workspace = true
+rust-version.workspace = true
 
 documentation = "https://docs.rs/timely/"
 homepage = "https://github.com/TimelyDataflow/timely-dataflow"
diff --git a/mdbook/Cargo.toml b/mdbook/Cargo.toml
index ca2e1e6a1..ce2643b4d 100644
--- a/mdbook/Cargo.toml
+++ b/mdbook/Cargo.toml
@@ -2,6 +2,7 @@
 name = "mdbook"
 version = "0.0.0"
 edition.workspace = true
+rust-version.workspace = true
 publish = false
 
 [lints]
diff --git a/timely/Cargo.toml b/timely/Cargo.toml
index 8b8e56acd..e7c6d0b13 100644
--- a/timely/Cargo.toml
+++ b/timely/Cargo.toml
@@ -5,6 +5,7 @@ version = "0.26.1"
 authors = ["Frank McSherry <fmcsherry@me.com>"]
 readme = "../README.md"
 edition.workspace = true
+rust-version.workspace = true
 description = "A low-latency data-parallel dataflow system in Rust"
 
 # These URLs point to more information about the repository