diff --git a/src/core/common/common-functions.ts b/src/core/common/common-functions.ts
index b5525f8..f2a17d5 100644
--- a/src/core/common/common-functions.ts
+++ b/src/core/common/common-functions.ts
@@ -32,7 +32,7 @@ export const isIdSelected = (id?: string): boolean =>
 export const isEnumSelected = (id?: string): boolean =>
   !!id && id !== UNSELECTED_ENUM;
 
-export const isTruthy = (t: any) => !!t;
+export const isTruthy = (t: unknown) => !!t;
 
 export const replaceNonAlphaNumeric = (
   value: string,
diff --git a/src/setupTests.ts b/src/setupTests.ts
index 57d618a..1348ab0 100644
--- a/src/setupTests.ts
+++ b/src/setupTests.ts
@@ -14,5 +14,5 @@ Object.defineProperty(global, 'crypto', {
 
 // missing from test env; may be fixed in Jest 28.x
 Object.defineProperty(global, 'structuredClone', {
-  value: (original: any) => JSON.parse(JSON.stringify(original)),
+  value: (original: unknown) => JSON.parse(JSON.stringify(original)),
 });
diff --git a/src/test/utils/import-test-json-util.ts b/src/test/utils/import-test-json-util.ts
index 54d03d1..e88e97f 100644
--- a/src/test/utils/import-test-json-util.ts
+++ b/src/test/utils/import-test-json-util.ts
@@ -1,2 +1,2 @@
 /** Test utility function: casts imported json. */
-export const castJsonForTest = <T>(jsonObject: any): T => jsonObject as T;
+export const castJsonForTest = <T>(jsonObject: unknown): T => jsonObject as T;
diff --git a/src/ui/model/command/command-editing-context.ts b/src/ui/model/command/command-editing-context.ts
index de02907..f5d25d5 100644
--- a/src/ui/model/command/command-editing-context.ts
+++ b/src/ui/model/command/command-editing-context.ts
@@ -30,7 +30,7 @@ type AbstractCommandReducerAction<T> = {
 };
 
 export interface CommandReducerNoPayloadAction
-  extends Omit<AbstractCommandReducerAction<any>, 'payload'> {
+  extends Omit<AbstractCommandReducerAction<unknown>, 'payload'> {
   type: typeof CommandReducerActionType.ADD_ACTION;
 }
 
diff --git a/src/validation/ValidationComponent.tsx b/src/validation/ValidationComponent.tsx
index 3f80ba9..b467e0e 100644
--- a/src/validation/ValidationComponent.tsx
+++ b/src/validation/ValidationComponent.tsx
@@ -28,8 +28,8 @@ type ValidationPropsComponent = <E>(
   props: ValidationProps<E>
 ) => React.ReactElement<ValidationProps<E>>;
 
-const isTouched = (
-  validator: FieldValidator<any>,
+const isTouched = <E,>(
+  validator: FieldValidator<E>,
   touched: Field[]
 ): boolean => {
   const validatorType = validator.validatorType;
@@ -49,9 +49,9 @@ const isTouched = (
  * - mode: submit -> any except delete
  * - mode: delete -> delete validators only
  */
-const shouldUseValidator = (
+const shouldUseValidator = <E,>(
   mode: ValidateMode,
-  validator: FieldValidator<any>,
+  validator: FieldValidator<E>,
   touched: Field[]
 ): boolean => {
   const isDeletionValidator =