diff --git a/internal/crypto/crypto.go b/internal/crypto/crypto.go
index 329c86e7..79a838ab 100644
--- a/internal/crypto/crypto.go
+++ b/internal/crypto/crypto.go
@@ -10,18 +10,22 @@ import (
 	"crypto/subtle"
 	"encoding/hex"
 	"fmt"
+	"hash/fnv"
 
 	"golang.org/x/crypto/bcrypt"
 )
 
-// HashFromBytes returns a SHA-256 checksum of the input.
+// HashFromBytes returns a non-cryptographic checksum of the input.
 func HashFromBytes(value []byte) string {
-	return fmt.Sprintf("%x", sha256.Sum256(value))
+	h := fnv.New128a()
+	h.Write(value)
+	return hex.EncodeToString(h.Sum(nil))
 }
 
-// Hash returns a SHA-256 checksum of a string.
-func Hash(value string) string {
-	return HashFromBytes([]byte(value))
+// SHA256 returns a SHA-256 checksum of a string.
+func SHA256(value string) string {
+	h := sha256.Sum256([]byte(value))
+	return hex.EncodeToString(h[:])
 }
 
 // GenerateRandomBytes returns random bytes.
diff --git a/internal/reader/atom/atom_03_adapter.go b/internal/reader/atom/atom_03_adapter.go
index 02d78ec8..daa877d8 100644
--- a/internal/reader/atom/atom_03_adapter.go
+++ b/internal/reader/atom/atom_03_adapter.go
@@ -103,7 +103,7 @@ func (a *Atom03Adapter) BuildFeed(baseURL string) *model.Feed {
 		// Generate the entry hash.
 		for _, value := range []string{atomEntry.ID, atomEntry.Links.OriginalLink()} {
 			if value != "" {
-				entry.Hash = crypto.Hash(value)
+				entry.Hash = crypto.SHA256(value)
 				break
 			}
 		}
diff --git a/internal/reader/atom/atom_10_adapter.go b/internal/reader/atom/atom_10_adapter.go
index ce80e814..6c7d4043 100644
--- a/internal/reader/atom/atom_10_adapter.go
+++ b/internal/reader/atom/atom_10_adapter.go
@@ -152,7 +152,7 @@ func (a *Atom10Adapter) populateEntries(siteURL string) model.Entries {
 		// Generate the entry hash.
 		for _, value := range []string{atomEntry.ID, atomEntry.Links.OriginalLink()} {
 			if value != "" {
-				entry.Hash = crypto.Hash(value)
+				entry.Hash = crypto.SHA256(value)
 				break
 			}
 		}
diff --git a/internal/reader/json/adapter.go b/internal/reader/json/adapter.go
index 89aa93ea..8d63e518 100644
--- a/internal/reader/json/adapter.go
+++ b/internal/reader/json/adapter.go
@@ -161,7 +161,7 @@ func (j *JSONAdapter) BuildFeed(baseURL string) *model.Feed {
 		for _, value := range []string{item.ID, item.URL, item.ContentText + item.ContentHTML + item.Summary} {
 			value = strings.TrimSpace(value)
 			if value != "" {
-				entry.Hash = crypto.Hash(value)
+				entry.Hash = crypto.SHA256(value)
 				break
 			}
 		}
diff --git a/internal/reader/rdf/adapter.go b/internal/reader/rdf/adapter.go
index 13d8f06f..9b5240c0 100644
--- a/internal/reader/rdf/adapter.go
+++ b/internal/reader/rdf/adapter.go
@@ -80,7 +80,7 @@ func (r *RDFAdapter) BuildFeed(baseURL string) *model.Feed {
 			hashValue = item.Title + item.Description // Fallback to the title and description if the link is empty.
 		}
 
-		entry.Hash = crypto.Hash(hashValue)
+		entry.Hash = crypto.SHA256(hashValue)
 
 		// Populate the entry date.
 		entry.Date = time.Now()
diff --git a/internal/reader/rss/adapter.go b/internal/reader/rss/adapter.go
index 78dd156d..845b103b 100644
--- a/internal/reader/rss/adapter.go
+++ b/internal/reader/rss/adapter.go
@@ -104,11 +104,11 @@ func (r *RSSAdapter) BuildFeed(baseURL string) *model.Feed {
 		// Generate the entry hash.
 		switch {
 		case item.GUID.Data != "":
-			entry.Hash = crypto.Hash(item.GUID.Data)
+			entry.Hash = crypto.SHA256(item.GUID.Data)
 		case entryURL != "":
-			entry.Hash = crypto.Hash(entryURL)
+			entry.Hash = crypto.SHA256(entryURL)
 		default:
-			entry.Hash = crypto.Hash(entry.Title + entry.Content)
+			entry.Hash = crypto.SHA256(entry.Title + entry.Content)
 		}
 
 		// Find CommentsURL if defined.