diff --git a/.github/actions/install-capnp/action.yml b/.github/actions/install-capnp/action.yml
deleted file mode 100644
index a0e9be832..000000000
--- a/.github/actions/install-capnp/action.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-name: Install Capn Proto
-runs:
-  using: composite
-  steps:
-    - run: |
-        sudo apt-get update
-        sudo apt-get install -y capnproto
-      shell: bash
diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
index cb1e2979d..3e87874b0 100644
--- a/.github/workflows/audit.yml
+++ b/.github/workflows/audit.yml
@@ -21,9 +21,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-
-      - name: Install capnproto
-        uses: ./.github/actions/install-capnp
         
       # See https://github.com/rustsec/audit-check for docs
       - uses: rustsec/audit-check@v1
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a85c916ff..56745779b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -47,9 +47,6 @@ jobs:
         with:
           prefix-key: v1-rust
 
-      - name: Install capnproto
-        uses: ./.github/actions/install-capnp
-
       - name: Build
         # Build in release without `testing` feature, this should work without `hotshot_example` config.
         run: |
@@ -87,10 +84,6 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Install Capn Proto
-        run: |
-          apt-get update && apt-get install -y capnproto
-
       - name: Enable Rust Caching
         uses: Swatinem/rust-cache@v2
 
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 1450b3e4d..67e48ebfd 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -30,9 +30,6 @@ jobs:
       - uses: Swatinem/rust-cache@v2
         name: Enable Rust Caching
 
-      - name: Install capnproto
-        uses: ./.github/actions/install-capnp
-
       - name: Format Check
         run: cargo fmt -- --check
 
diff --git a/.github/workflows/test-demo-native.yml b/.github/workflows/test-demo-native.yml
index 3e8d56456..e4d404ecc 100644
--- a/.github/workflows/test-demo-native.yml
+++ b/.github/workflows/test-demo-native.yml
@@ -43,9 +43,6 @@ jobs:
       - name: Enable Rust Caching
         uses: Swatinem/rust-cache@v2
 
-      - name: Install capnproto
-        uses: ./.github/actions/install-capnp
-
       - name: Build
         run: cargo build --release
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 129818907..2c1ff5d28 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -47,9 +47,6 @@ jobs:
       - name: Enable Rust Caching
         uses: Swatinem/rust-cache@v2
 
-      - name: Install capnproto
-        uses: ./.github/actions/install-capnp
-
       - name: Test
         # Build test binary with `testing` feature, which requires `hotshot_example` config
         run: |
diff --git a/.github/workflows/unused-deps.yml b/.github/workflows/unused-deps.yml
index d7dfba513..e3bf06207 100644
--- a/.github/workflows/unused-deps.yml
+++ b/.github/workflows/unused-deps.yml
@@ -23,9 +23,6 @@ jobs:
 
       - uses: Swatinem/rust-cache@v2
       
-      - name: Install capnproto
-        uses: ./.github/actions/install-capnp
-
       - name: Run cargo-udeps
         uses: aig787/cargo-udeps-action@v1
         with:
diff --git a/cross-shell.nix b/cross-shell.nix
index ac88cc84b..b9b3949d9 100644
--- a/cross-shell.nix
+++ b/cross-shell.nix
@@ -16,7 +16,6 @@ pkgs.mkShell {
     # Crate dependencies
     cargoDeps.openssl-sys
     protobuf # required by libp2p
-    capnproto
 
     openssh
   ];
diff --git a/doc/ubuntu.md b/doc/ubuntu.md
index 24e980011..fe991848b 100644
--- a/doc/ubuntu.md
+++ b/doc/ubuntu.md
@@ -5,7 +5,7 @@
 ## Install system dependencies
 
     sudo apt-get update
-    sudo apt-get install -y curl cmake pkg-config libssl-dev protobuf-compiler git postgresql-client lsb-release gpg capnproto
+    sudo apt-get install -y curl cmake pkg-config libssl-dev protobuf-compiler git postgresql-client lsb-release gpg
 
 ## Install just
 
diff --git a/flake.nix b/flake.nix
index 0ad8aea30..7736b430d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -189,7 +189,6 @@
             protobuf # to compile libp2p-autonat
             stableToolchain
             jq
-            capnproto
 
             # Rust tools
             cargo-audit
@@ -252,7 +251,6 @@
             curl
             protobuf # to compile libp2p-autonat
             toolchain
-            capnproto
           ];
           inherit RUST_LOG RUST_BACKTRACE RUSTFLAGS CARGO_TARGET_DIR;
         };
@@ -267,7 +265,6 @@
             openssl
             curl
             protobuf # to compile libp2p-autonat
-            capnproto
             toolchain
             grcov
           ];
@@ -292,7 +289,6 @@
             openssl
             curl
             protobuf # to compile libp2p-autonat
-            capnproto
             stableToolchain
           ];
           inherit RUST_LOG RUST_BACKTRACE RUSTFLAGS CARGO_TARGET_DIR;