diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index b34e047e..0bbc2b36 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -21,7 +21,28 @@ jobs:
           - stable
           - beta
           - nightly
-        os: [ubuntu-latest, windows-latest, macos-13, macos-latest]
+        os:
+          - ubuntu-latest
+          - windows-latest
+        include:
+          - toolchain: stable
+            os: macos-13
+          - toolchain: stable
+            os: macos-latest
+          - toolchain: "1.20"
+            os: ubuntu-latest
+          - toolchain: "1.28"
+            os: ubuntu-latest
+          - toolchain: "1.30"
+            os: ubuntu-latest
+          - toolchain: "1.40"
+            os: ubuntu-latest
+          - toolchain: "1.50"
+            os: ubuntu-latest
+          - toolchain: "1.60"
+            os: ubuntu-latest
+          - toolchain: "1.70"
+            os: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
diff --git a/README.rst b/README.rst
index ceb41cb3..cdb0fb41 100644
--- a/README.rst
+++ b/README.rst
@@ -23,10 +23,10 @@ LivInTheLookingGlass’s Project Euler solutions
 +------------+---------------------+--------------+--------------+
 | Language   | Version             | Solved       | Status       |
 +============+=====================+==============+==============+
-| C          | C11+ in: |br|       | 17 / |total| | |C|          |
-|            | ``gcc``, ``pcc``,   |              |              |
-|            | ``tcc``, |br|       |              |              |
-|            | ``clang``, ``msvc`` |              |              |
+| C          | C11+ in: ``gcc``,   | 17 / |total| | |C|          |
+|            | |br| ``clang``,     |              |              |
+|            | ``msvc``, |br|      |              |              |
+|            | ``pcc``, ``tcc``    |              |              |
 +------------+---------------------+--------------+--------------+
 | C#         | .NET 5+             | 1 / |total|  | |C#|         |
 +------------+---------------------+--------------+--------------+
@@ -36,7 +36,7 @@ LivInTheLookingGlass’s Project Euler solutions
 |            | Pypy 3.8+ |br|      |              |              |
 |            | GraalPy 23.1+       |              |              |
 +------------+---------------------+--------------+--------------+
-| Rust       |                     | 1 / |total|  | |Rust|       |
+| Rust       | 1.28+               | 1 / |total|  | |Rust|       |
 +------------+---------------------+--------------+--------------+
 | CodeQL Scanning                                 | |CodeQL|     |
 +-------------------------------------------------+--------------+