2 files changed, 4 insertions, 4 deletions
diff --git a/packages/sol-cov/src/artifact_adapters/sol_compiler_artifact_adapter.ts b/packages/sol-cov/src/artifact_adapters/sol_compiler_artifact_adapter.ts
index 220a9f98c..8e03bf7fd 100644
--- a/packages/sol-cov/src/artifact_adapters/sol_compiler_artifact_adapter.ts
+++ b/packages/sol-cov/src/artifact_adapters/sol_compiler_artifact_adapter.ts
@@ -12,8 +12,8 @@ import { AbstractArtifactAdapter } from './abstract_artifact_adapter';
 const CONFIG_FILE = 'compiler.json';
 
 export class SolCompilerArtifactAdapter extends AbstractArtifactAdapter {
-    private _artifactsPath: string;
-    private _sourcesPath: string;
+    private readonly _artifactsPath: string;
+    private readonly _sourcesPath: string;
     constructor(artifactsPath?: string, sourcesPath?: string) {
         super();
         const config: CompilerOptions = fs.existsSync(CONFIG_FILE)
diff --git a/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts b/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts
index 53449e5e1..53b77aed5 100644
--- a/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts
+++ b/packages/sol-cov/src/artifact_adapters/truffle_artifact_adapter.ts
@@ -7,8 +7,8 @@ import { AbstractArtifactAdapter } from './abstract_artifact_adapter';
 import { SolCompilerArtifactAdapter } from './sol_compiler_artifact_adapter';
 
 export class TruffleArtifactAdapter extends AbstractArtifactAdapter {
-    private _solcVersion: string;
-    private _sourcesPath: string;
+    private readonly _solcVersion: string;
+    private readonly _sourcesPath: string;
     constructor(sourcesPath: string, solcVersion: string) {
         super();
         this._solcVersion = solcVersion;