diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 05aedbc3..6b58dca9 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -31,7 +31,7 @@ jobs:
       - name: "Install cairo-lang"
         run: |
           # We need to pin the version of sympy, 1.13.0 is incompatible with cairo-lang
-          pip install cairo-lang==0.13.2 "sympy<1.13.0"
+          pip install cairo-lang==0.13.3 "sympy<1.13.0"
       - name: "Prepare test environment"
         run: |
           mkdir -p build
@@ -53,7 +53,7 @@ jobs:
       - name: "Install cairo-lang"
         run: |
           # We need to pin the version of sympy, 1.13.0 is incompatible with cairo-lang
-          pip install cairo-lang==0.13.2 "sympy<1.13.0"
+          pip install cairo-lang==0.13.3 "sympy<1.13.0"
       - name: "Prepare test environment"
         run: |
           bash ./setup-scripts/reset-tests.sh
@@ -85,14 +85,3 @@ jobs:
           cairo-compile cairo-lang/src/starkware/starknet/core/os/os.cairo --output build/os_latest.json --cairo_path cairo-lang/src
       - run: cargo install cargo-udeps --locked
       - run: cargo udeps --all-targets
-
-  orphans:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - run: rustup show
-      - run: rustup component add rustfmt
-      - uses: Swatinem/rust-cache@v2
-      - run: git submodule update --init
-      - run: ./scripts/check-orphans.sh
-
diff --git a/.github/workflows/prove_blocks.yml b/.github/workflows/prove_blocks.yml
index 12af39ec..82200ab6 100644
--- a/.github/workflows/prove_blocks.yml
+++ b/.github/workflows/prove_blocks.yml
@@ -57,3 +57,9 @@ jobs:
           PATHFINDER_RPC_URL: ${{ secrets.PATHFINDER_RPC_URL }}
         run: |
           cargo test --release --package prove_block --test hash_tests -- test_recompute_class_hash test_class_proof_verification_ok test_class_proof_verification_non_inclusion --show-output --ignored
+
+      - name: Hint tool: Orphans
+        env:
+          PATHFINDER_RPC_URL: ${{ secrets.PATHFINDER_RPC_URL }}
+        run: |
+          cargo run --release --package hint_tool -- --subset orphaned
diff --git a/scripts/check-orphans.sh b/scripts/check-orphans.sh
deleted file mode 100755
index 61e0783f..00000000
--- a/scripts/check-orphans.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-cargo run --quiet --example hints orphans | jq -e 'if length == 0 then . else empty end'
-if [ $? -ne '0' ]; then
-  echo -e "orphaned hints found:"
-  cargo run --quiet --example hints orphans | jq .
-  exit 1
-fi
\ No newline at end of file