diff --git a/test/externalTests/ens.sh b/test/externalTests/ens.sh
index 834c1074b..ca041afbc 100755
--- a/test/externalTests/ens.sh
+++ b/test/externalTests/ens.sh
@@ -65,10 +65,6 @@ function ens_test
     force_hardhat_compiler_settings "$config_file" "$(first_word "$SELECTED_PRESETS")"
     yarn install
 
-    # With ethers.js 5.6.2 many tests for revert messages fail.
-    # TODO: Remove when https://github.com/ethers-io/ethers.js/discussions/2849 is resolved.
-    yarn add ethers@5.6.1
-
     replace_version_pragmas
     neutralize_packaged_contracts
 
diff --git a/test/externalTests/euler.sh b/test/externalTests/euler.sh
index fe8680572..01ac2c746 100755
--- a/test/externalTests/euler.sh
+++ b/test/externalTests/euler.sh
@@ -78,10 +78,6 @@ function euler_test
     force_hardhat_unlimited_contract_size "$config_file"
     npm install
 
-    # With ethers.js 5.6.2 many tests for revert messages fail.
-    # TODO: Remove when https://github.com/ethers-io/ethers.js/discussions/2849 is resolved.
-    npm install ethers@5.6.1
-
     replace_version_pragmas
     neutralize_packaged_contracts
 
diff --git a/test/externalTests/gnosis.sh b/test/externalTests/gnosis.sh
index ae268603b..4bd7c66fe 100755
--- a/test/externalTests/gnosis.sh
+++ b/test/externalTests/gnosis.sh
@@ -94,6 +94,10 @@ function gnosis_safe_test
     npm install
     npm install hardhat-gas-reporter
 
+    # Typescript compilation fails with typescript >= 4.7:
+    # Error: Debug Failure. False expression: Non-string value passed to `ts.resolveTypeReferenceDirective`
+    npm install "typescript@<4.7.0"
+
     # With ethers.js 5.6.2 many tests for revert messages fail.
     # TODO: Remove when https://github.com/ethers-io/ethers.js/discussions/2849 is resolved.
     npm install ethers@5.6.1