diff --git a/src/commands/ajv.ts b/src/commands/ajv.ts
index d29c2c6..60241a2 100644
--- a/src/commands/ajv.ts
+++ b/src/commands/ajv.ts
@@ -84,7 +84,7 @@ export default function (argv: ParsedArgs): AjvCore {
 
     try {
       registerer = require("ts-node").register()
-    } catch (err) {
+    } catch (err: any) {
       /* istanbul ignore next */
       if (err.code === "MODULE_NOT_FOUND") {
         throw new Error(
diff --git a/src/commands/util.ts b/src/commands/util.ts
index 6637134..56ca8f6 100644
--- a/src/commands/util.ts
+++ b/src/commands/util.ts
@@ -50,7 +50,7 @@ export function openFile(filename: string, suffix: string, format?: string): any
     } catch (e) {
       json = require(file)
     }
-  } catch (err) {
+  } catch (err: any) {
     const msg: string = err.message
     console.error(`error:  ${msg.replace(" module", " " + suffix)}`)
     process.exit(2)
@@ -79,7 +79,7 @@ export function compile(ajv: Ajv, schemaFile: string): AnyValidateFunction {
   const schema = openFile(schemaFile, "schema", "json")
   try {
     return ajv.compile(schema)
-  } catch (err) {
+  } catch (err: any) {
     console.error(`schema ${schemaFile} is invalid`)
     console.error(`error: ${err.message}`)
     process.exit(1)