diff --git a/.cirrus.yml b/.cirrus.yml
index 8a6d83cdd..9b703cf47 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -103,7 +103,7 @@ freebsd_task:
         - mkdir build && cd build
         - chown -R fish-user ..
         - sudo -u fish-user -s whoami
-        # FreeBSD's pkg currently has rust 1.66.0 while we need rust 1.67.0+. Use rustup to install
+        # FreeBSD's pkg currently has rust 1.66.0 while we need rust 1.70.0+. Use rustup to install
         # the latest, but note that it only installs rust per-user.
         - sudo -u fish-user -s fetch -qo - https://sh.rustup.rs > rustup.sh
         - sudo -u fish-user -s sh ./rustup.sh -y --profile=minimal
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e2c2fa609..f42198ef0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: dtolnay/rust-toolchain@1.67
+    - uses: dtolnay/rust-toolchain@1.70
     - name: Install deps
       run: |
         sudo apt install gettext libpcre2-dev python3-pip tmux
@@ -43,7 +43,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: dtolnay/rust-toolchain@1.67
+    - uses: dtolnay/rust-toolchain@1.70
       with:
         targets: "i686-unknown-linux-gnu" # rust-toolchain wants this comma-separated
     - name: Install deps
@@ -127,7 +127,7 @@ jobs:
   #
   #   steps:
   #   - uses: actions/checkout@v4
-  #   - uses: dtolnay/rust-toolchain@1.67
+  #   - uses: dtolnay/rust-toolchain@1.70
   #   - name: Install deps
   #     run: |
   #       sudo apt install gettext libpcre2-dev python3-pip tmux
@@ -154,7 +154,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: dtolnay/rust-toolchain@1.67
+    - uses: dtolnay/rust-toolchain@1.70
     - name: Install deps
       run: |
         # --break-system-packages because homebrew has now declared itself "externally managed".
diff --git a/Cargo.toml b/Cargo.toml
index be7d073bc..85e669717 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ members = [
 ]
 
 [workspace.package]
-rust-version = "1.67"
+rust-version = "1.70"
 edition = "2021"
 
 [profile.release]
diff --git a/README.rst b/README.rst
index b3458fab6..98c74c362 100644
--- a/README.rst
+++ b/README.rst
@@ -138,7 +138,7 @@ Dependencies, git master
 
 Building from git master currently requires, in addition to the dependencies for a tarball:
 
--  Rust (version 1.67 or later)
+-  Rust (version 1.70 or later)
 -  CMake (version 3.19 or later)
 -  libclang, even if you are compiling with GCC
 -  an Internet connection
diff --git a/debian/control b/debian/control
index bb486502a..e5289c1b6 100644
--- a/debian/control
+++ b/debian/control
@@ -6,7 +6,7 @@ Uploaders: David Adam <zanchey@ucc.gu.uwa.edu.au>
 # Debhelper should be bumped to >= 10 once Ubuntu Xenial is no longer supported
 Build-Depends: debhelper (>= 9.20160115), cmake (>= 3.5.0), gettext, libpcre2-dev,
 # Test dependencies
- locales-all, python3, rustc (>= 1.67) | rustc-mozilla (>= 1.67), cargo
+ locales-all, python3, rustc (>= 1.70) | rustc-mozilla (>= 1.70), cargo
 Standards-Version: 4.1.5
 Homepage: https://fishshell.com/
 Vcs-Git: https://github.com/fish-shell/fish-shell.git
diff --git a/doc_internal/rust-devel.md b/doc_internal/rust-devel.md
index ac7d9545e..658a7e17e 100644
--- a/doc_internal/rust-devel.md
+++ b/doc_internal/rust-devel.md
@@ -18,7 +18,7 @@ We use forks of the last two - see the [FFI section](#ffi) below. No special act
 
 ### Build Dependencies
 
-fish-shell currently depends on Rust 1.67 or later. To install Rust, follow https://rustup.rs.
+fish-shell currently depends on Rust 1.70 or later. To install Rust, follow https://rustup.rs.
 
 ### Build via CMake
 
diff --git a/fish.spec.in b/fish.spec.in
index 22cea739d..774f7b7ce 100644
--- a/fish.spec.in
+++ b/fish.spec.in
@@ -10,7 +10,7 @@ URL:                    https://fishshell.com/
 
 Source0:                %{name}_@VERSION@.orig.tar.xz
 BuildRequires:          cargo gettext gcc-c++ xz pcre2-devel
-BuildRequires:          rust >= 1.67
+BuildRequires:          rust >= 1.70
 
 %if 0%{?rhel} && 0%{?rhel} < 8
 BuildRequires: cmake3