diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3909ae8..a8743ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 All notable changes to this project will be documented in this file.
 
+## [v1.84.0]
+- Added/updated `pipedrive` and `amplitude` rules
+
 ## [v1.83.0]
 - Kingfisher can now generate an auditor-friendly HTML report: `--format html --output kingfisher-audit.html`
 - Architecture: split `matcher.rs` into a `src/matcher/` module directory with focused sub-modules (`base64_decode`, `captures`, `conversion`, `dedup`, `filter`, `fingerprint`). Decomposed `filter_match` into smaller validation helpers.
diff --git a/Cargo.toml b/Cargo.toml
index a443814..5c47363 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -48,7 +48,7 @@ http = "1.4"
 
 [package]
 name = "kingfisher"
-version = "1.83.0"
+version = "1.84.0"
 description = "MongoDB's blazingly fast and accurate secret scanning and validation tool"
 edition.workspace = true
 rust-version.workspace = true
diff --git a/crates/kingfisher-rules/data/rules/amplitude.yml b/crates/kingfisher-rules/data/rules/amplitude.yml
new file mode 100644
index 0000000..acfaf92
--- /dev/null
+++ b/crates/kingfisher-rules/data/rules/amplitude.yml
@@ -0,0 +1,56 @@
+rules:
+  - name: Amplitude Secret Key
+    id: kingfisher.amplitude.``
+    pattern: |
+      (?xi)
+      \b
+      amplitude
+      (?:.|[\n\r]){0,32}?
+      (?:SECRET|PRIVATE|ACCESS|KEY|TOKEN|AUTHORIZATION)
+      (?:.|[\n\r]){0,16}?
+      \b
+      (
+        [a-f0-9]{32}
+      )
+      \b
+    pattern_requirements:
+      min_digits: 4
+    min_entropy: 3.3
+    confidence: medium
+    examples:
+      - 'amplitude_api_key=8b6f8d6594749cb659b1be03e6a0a2e7'
+      - 'AMPLITUDE_API_KEY=ef929907c3923e8f3da83c24f0255aa6'
+      - |
+        curl --location --request GET 'https://amplitude.com/api/2/export?start=20220101T00&end=20220127T00' \
+        --header 'Authorization: Basic YWhhbWwsdG9uQGFwaWdlZS5jb206bClwYXNzdzByZAo'
+      - "AMPLITUDE_SECRET_KEY=8b6f8d6594749cb659b1be03e6a0a2e7"
+    references:
+      - https://amplitude.com/docs/apis/authentication
+      - https://www.docs.developers.amplitude.com/analytics/apis/export-api/
+    validation:
+      type: Http
+      content:
+        request:
+          method: POST
+          url: https://api2.amplitude.com/2/httpapi
+          headers:
+            Content-Type: application/json
+            Accept: "*/*"
+          body: |
+            {
+              "api_key": "{{ TOKEN }}",
+              "events": [
+                {
+                  "user_id": "203201202",
+                  "device_id": "C8F9E604-F01A-4BD9-95C6-8E5357DF265D",
+                  "event_type": "watch_tutorial"
+                }
+              ]
+            }
+          response_matcher:
+            - report_response: true
+            - type: StatusMatch
+              status: [200]
+            - type: WordMatch
+              words:
+                - '"code":200'
diff --git a/crates/kingfisher-rules/data/rules/google.yml b/crates/kingfisher-rules/data/rules/google.yml
index 4f5d665..70b2df0 100644
--- a/crates/kingfisher-rules/data/rules/google.yml
+++ b/crates/kingfisher-rules/data/rules/google.yml
@@ -106,10 +106,9 @@ rules:
       (?xi)           
       \b
       (               
-        AIza          
-        [A-Za-z0-9_-]{35}
+        AIzaSy
+        [A-Za-z0-9_-]{33}
       )
-      \b
     pattern_requirements:
       min_digits: 2
       min_uppercase: 1
diff --git a/crates/kingfisher-rules/data/rules/pipedrive.yml b/crates/kingfisher-rules/data/rules/pipedrive.yml
new file mode 100644
index 0000000..36072c5
--- /dev/null
+++ b/crates/kingfisher-rules/data/rules/pipedrive.yml
@@ -0,0 +1,55 @@
+rules:
+  - name: Pipedrive API Token
+    id: kingfisher.pipedrive.1
+    pattern: |
+      (?xi)
+      \b
+      (?:
+        pipedrive
+        (?:.|[\n\r]){0,32}?
+        (?:api[_-]?token|x-api-token|token|authorization|key)
+        |
+        x-api-token
+      )
+      (?:.|[\n\r]){0,16}?
+      \b
+      (
+        [a-f0-9]{40}
+      )
+      \b
+    pattern_requirements:
+      min_digits: 4
+    min_entropy: 3.3
+    confidence: high
+    examples:
+      - 'x-api-token: 659c9fddb16335e48cc67114694b52074e812e03'
+      - 'PIPEDRIVE_API_TOKEN=740dd23ada464336f353b4d08e83c4a801fc1d86'
+      - 'x-api-token: 2592440cff58a695e33e5776160c4ee5e73e1b9c'
+      - 'pipedrive token: bbbe1b93ebbf4b0a68a752916b58c8df9b1acae8'
+      - |
+        curl --request GET \
+        --url "https://companydomain.pipedrive.com/api/v2/deals" \
+        --header "x-api-token: 659c9fddb16335e48cc67114694b52074e812e03"
+    references:
+      - https://pipedrive.readme.io/docs/core-api-concepts-authentication
+      - https://pipedrive.readme.io/docs/how-to-find-the-api-token
+    validation:
+      type: Http
+      content:
+        request:
+          method: GET
+          url: https://api.pipedrive.com/v1/users/me
+          headers:
+            x-api-token: "{{ TOKEN }}"
+            Accept: application/json
+          response_matcher:
+            - report_response: true
+            - type: StatusMatch
+              status: [200]
+            - type: WordMatch
+              words:
+                - '"success":true'
+                - '"data"'
+              match_all_words: true
+    # Revocation note: Pipedrive API tokens are managed via UI/admin controls.
+    # No documented token-self-revocation endpoint is available for this token format.