diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5c95574..172042d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,6 +69,13 @@ jobs:
           chmod 755 external/bin/gcc external/bin/g++
           echo '${{ github.workspace }}/external/bin' >> $GITHUB_PATH
 
+      - name: 'Install dependencies (macOS)'
+        if: runner.os == 'macOS' && matrix.branch == 'devel'
+        run: |
+          brew install openssl@1.1
+          ln -s $(brew --prefix)/opt/openssl/lib/libcrypto.1.1.dylib /usr/local/lib/
+          ln -s $(brew --prefix)/opt/openssl/lib/libssl.1.1.dylib /usr/local/lib/
+
       - name: Restore rocksdb from cache (Macos)
         if: runner.os != 'Windows'
         id: rocksdb-cache
diff --git a/eth/common/chaindb.nim b/eth/common/chaindb.nim
index 697da62..9475077 100644
--- a/eth/common/chaindb.nim
+++ b/eth/common/chaindb.nim
@@ -55,7 +55,7 @@ method getAncestorHeader*(db: AbstractChainDB, h: BlockHeader,
   notImplemented("getAncestorHeader")
 
 method getBlockBody*(db: AbstractChainDB, blockHash: KeccakHash): BlockBodyRef
-    {.base, gcsafe, raises: [Defect].} =
+    {.base, gcsafe, raises: [RlpError, Defect].} =
   notImplemented("getBlockBody")
 
 method getReceipt*(db: AbstractChainDB, hash: KeccakHash): ReceiptRef {.base, gcsafe.} =
@@ -95,3 +95,6 @@ method persistBlocks*(db: AbstractChainDB, headers: openArray[BlockHeader], bodi
 method getForkId*(db: AbstractChainDB, n: BlockNumber): ForkID {.base, gcsafe.} =
   # EIP 2364/2124
   notImplemented("getForkId")
+
+method getTotalDifficulty*(db: AbstractChainDB): DifficultyInt {.base, gcsafe, raises: [RlpError, Defect].} =
+  notImplemented("getTotalDifficulty")