diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eabc5cf5d..8f63d2ecc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -49,7 +49,7 @@ jobs:
           node-version: 22
 
       - name: Install Jujutsu
-        uses: taiki-e/install-action@07b4745e0c39a41822af610387492e3e53aa222b # v2.83.4
+        uses: taiki-e/install-action@5b4d68e2e660441203ab128a23676f1e4faf1532 # v2.86.3
         with:
           tool: jj-cli
 
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 7edc6626c..1df76dd82 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -37,7 +37,7 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Install Nix
-        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31.11.0
+        uses: cachix/install-nix-action@13d8dd58da0234aa297dedd986986ccb8e7f3e24 # v31.11.1
         with:
           extra_nix_config: |
             extra-substituters = https://nix-community.cachix.org
diff --git a/.github/workflows/pr-ci.yml b/.github/workflows/pr-ci.yml
index 86b125a71..d18610234 100644
--- a/.github/workflows/pr-ci.yml
+++ b/.github/workflows/pr-ci.yml
@@ -72,7 +72,7 @@ jobs:
           node-version: 22
 
       - name: Install Jujutsu
-        uses: taiki-e/install-action@07b4745e0c39a41822af610387492e3e53aa222b # v2.83.4
+        uses: taiki-e/install-action@5b4d68e2e660441203ab128a23676f1e4faf1532 # v2.86.3
         with:
           tool: jj-cli
 
@@ -150,7 +150,7 @@ jobs:
           node-version: 22
 
       - name: Install Jujutsu
-        uses: taiki-e/install-action@07b4745e0c39a41822af610387492e3e53aa222b # v2.83.4
+        uses: taiki-e/install-action@5b4d68e2e660441203ab128a23676f1e4faf1532 # v2.86.3
         with:
           tool: jj-cli