diff --git a/.github/workflows/cargo.yml b/.github/workflows/cargo.yml
index b734a4fe..c50bcfe0 100644
--- a/.github/workflows/cargo.yml
+++ b/.github/workflows/cargo.yml
@@ -38,7 +38,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           components: cargo
-          toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+          toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
       - name: Check out ci repo
         run: git clone https://github.com/stratis-storage/ci.git
       - name: Run comparisons of version specs with available Fedora packages
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7f13b603..90eaf2d6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,19 +24,19 @@ jobs:
       matrix:
         include:
           - components: rustfmt
-            toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+            toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
             task: make -f Makefile fmt-ci
           - components: clippy
-            toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+            toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
             task: make -f Makefile clippy
           - components: cargo
-            toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+            toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
             task: make -f Makefile build
           - components: cargo
-            toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+            toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
             task: make -f Makefile docs
           - components: cargo
-            toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+            toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
             task: make -f Makefile check-typos
     runs-on: ubuntu-20.04
     steps:
@@ -60,7 +60,7 @@ jobs:
       matrix:
         include:
           - toolchain: 1.71.1  # LOWEST SUPPORTED RUST TOOLCHAIN
-          - toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+          - toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 23e7d20b..994bd06b 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -16,7 +16,7 @@ jobs:
       matrix:
         include:
           - components: cargo
-            toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+            toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
             task: make -f Makefile audit
           # Allowed because a failure may occur after a new Rust stable
           # version is released.
@@ -59,7 +59,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           components: cargo
-          toolchain: 1.77.2  # CURRENT DEVELOPMENT RUST TOOLCHAIN
+          toolchain: 1.78.0  # CURRENT DEVELOPMENT RUST TOOLCHAIN
       - name: Check out ci repo
         run: git clone https://github.com/stratis-storage/ci.git
       - name: Run comparisons of version specs with available Fedora packages