diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6319c883..9bb16b423 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+# [0.109.0](https://github.com/gotson/komga/compare/v0.108.0...v0.109.0) (2021-07-21)
+
+
+### Features
+
+* **api:** count series by first letter ([199c619](https://github.com/gotson/komga/commit/199c6190a3c7fa8d0aa91935333aa23fa20ff42e))
+* **api:** search series by regex ([1fe5580](https://github.com/gotson/komga/commit/1fe55809a1e58c299151433c17889b9d4eb81a81))
+* **webui:** alphabetical navigation for libraries ([5d747d2](https://github.com/gotson/komga/commit/5d747d2cd3431410eb84554a8afd55086662eb51)), closes [#186](https://github.com/gotson/komga/issues/186)
+
 # [0.108.0](https://github.com/gotson/komga/compare/v0.107.0...v0.108.0) (2021-07-19)
 
 
diff --git a/gradle.properties b/gradle.properties
index bfe18fae8..5e63498d2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
-version=0.108.0
+version=0.109.0
 org.gradle.jvmargs=-Xmx2G -XX:MaxPermSize=2G
diff --git a/komga/docs/openapi.json b/komga/docs/openapi.json
index 42814764e..db3948505 100644
--- a/komga/docs/openapi.json
+++ b/komga/docs/openapi.json
@@ -130,6 +130,22 @@
           }
         }
       },
+      "GroupCountDto": {
+        "type": "object",
+        "required": [
+          "count",
+          "group"
+        ],
+        "properties": {
+          "count": {
+            "format": "int32",
+            "type": "integer"
+          },
+          "group": {
+            "type": "string"
+          }
+        }
+      },
       "UserDto": {
         "type": "object",
         "required": [
@@ -4330,6 +4346,197 @@
         ]
       }
     },
+    "/api/v1/series/alphabetical-groups": {
+      "get": {
+        "operationId": "getAlphabeticalGroups",
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "array",
+                  "items": {
+                    "$ref": "#/components/schemas/GroupCountDto"
+                  }
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Bad Request",
+            "content": {
+              "*/*": {
+                "schema": {
+                  "$ref": "#/components/schemas/ValidationErrorResponse"
+                }
+              }
+            }
+          }
+        },
+        "parameters": [
+          {
+            "schema": {
+              "type": "string"
+            },
+            "in": "query",
+            "name": "search",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "library_id",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "collection_id",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "ENDED",
+                  "ONGOING",
+                  "ABANDONED",
+                  "HIATUS"
+                ]
+              }
+            },
+            "in": "query",
+            "name": "status",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "enum": [
+                  "UNREAD",
+                  "READ",
+                  "IN_PROGRESS"
+                ]
+              }
+            },
+            "in": "query",
+            "name": "read_status",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "publisher",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "language",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "genre",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "tag",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "age_rating",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "release_year",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "boolean"
+            },
+            "in": "query",
+            "name": "deleted",
+            "required": false
+          },
+          {
+            "schema": {
+              "type": "string"
+            },
+            "in": "query",
+            "name": "search_regex",
+            "description": "Search by regex criteria, in the form: regex,field. Supported fields are TITLE and TITLE_SORT."
+          },
+          {
+            "schema": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "in": "query",
+            "name": "author",
+            "description": "Author criteria in the format: name,role. Multiple author criteria are supported."
+          }
+        ],
+        "tags": [
+          "series-controller"
+        ]
+      }
+    },
     "/opds/v1.2/books/{bookId}/pages/{pageNumber}": {
       "get": {
         "operationId": "getBookPage_1",
@@ -5256,6 +5463,14 @@
             "name": "unpaged",
             "required": false
           },
+          {
+            "schema": {
+              "type": "string"
+            },
+            "in": "query",
+            "name": "search_regex",
+            "description": "Search by regex criteria, in the form: regex,field. Supported fields are TITLE and TITLE_SORT."
+          },
           {
             "schema": {
               "type": "integer"