diff --git a/esphome/components/md5/md5.h b/esphome/components/md5/md5.h
index 73d99205c0..b0da2c0a3b 100644
--- a/esphome/components/md5/md5.h
+++ b/esphome/components/md5/md5.h
@@ -38,6 +38,7 @@ class MD5Digest : public HashBase {
 
   /// Add bytes of data for the digest.
   void add(const uint8_t *data, size_t len) override;
+  using HashBase::add;  // Bring base class overload into scope
 
   /// Compute the digest, based on the provided data.
   void calculate() override;
diff --git a/esphome/components/sha256/sha256.h b/esphome/components/sha256/sha256.h
index 004b1e50fc..bb089bc314 100644
--- a/esphome/components/sha256/sha256.h
+++ b/esphome/components/sha256/sha256.h
@@ -29,6 +29,7 @@ class SHA256 : public esphome::HashBase {
 
   void init() override;
   void add(const uint8_t *data, size_t len) override;
+  using HashBase::add;  // Bring base class overload into scope
   void add(const std::string &data) { this->add((const uint8_t *) data.c_str(), data.length()); }
 
   void calculate() override;