diff --git a/.github/workflows/ghash.yml b/.github/workflows/ghash.yml
index 59cf2d1..0624830 100644
--- a/.github/workflows/ghash.yml
+++ b/.github/workflows/ghash.yml
@@ -3,6 +3,7 @@ name: ghash
 on:
   pull_request:
     paths:
+      - ".github/workflows/ghash.yml"
       - "ghash/**"
       - "Cargo.*"
   push:
diff --git a/.github/workflows/poly1305.yml b/.github/workflows/poly1305.yml
index 03638f5..768fde5 100644
--- a/.github/workflows/poly1305.yml
+++ b/.github/workflows/poly1305.yml
@@ -3,6 +3,7 @@ name: poly1305
 on:
   pull_request:
     paths:
+      - ".github/workflows/poly1305.yml"
       - "poly1305/**"
       - "Cargo.*"
   push:
diff --git a/.github/workflows/polyval.yml b/.github/workflows/polyval.yml
index e4da1b8..7f83862 100644
--- a/.github/workflows/polyval.yml
+++ b/.github/workflows/polyval.yml
@@ -3,6 +3,7 @@ name: polyval
 on:
   pull_request:
     paths:
+      - ".github/workflows/polyval.yml"
       - "polyval/**"
       - "Cargo.*"
   push:
@@ -187,7 +188,7 @@ jobs:
       matrix:
         include:
           - target: aarch64-unknown-linux-gnu
-            rust: nightly
+            rust: nightly-2022-03-01
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1