diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 42864cbb..8d4e32cb 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -15,6 +15,8 @@ Changed
 Fixed
 ~~~~~
 
+- Remove padding from JWK test data. `#628 <https://github.com/jpadilla/pyjwt/pull/628>`__
+
 Added
 ~~~~~
 
diff --git a/tests/keys/jwk_ec_key_P-256.json b/tests/keys/jwk_ec_key_P-256.json
index 7c67b24c..e936e260 100644
--- a/tests/keys/jwk_ec_key_P-256.json
+++ b/tests/keys/jwk_ec_key_P-256.json
@@ -2,7 +2,7 @@
   "kty": "EC",
   "kid": "bilbo.baggins.256@hobbiton.example",
   "crv": "P-256",
-  "x": "PTTjIY84aLtaZCxLTrG_d8I0G6YKCV7lg8M4xkKfwQ4=",
-  "y": "ank6KA34vv24HZLXlChVs85NEGlpg2sbqNmR_BcgyJU=",
-  "d": "9GJquUJf57a9sev-u8-PoYlIezIPqI_vGpIaiu4zyZk="
+  "x": "PTTjIY84aLtaZCxLTrG_d8I0G6YKCV7lg8M4xkKfwQ4",
+  "y": "ank6KA34vv24HZLXlChVs85NEGlpg2sbqNmR_BcgyJU",
+  "d": "9GJquUJf57a9sev-u8-PoYlIezIPqI_vGpIaiu4zyZk"
 }
diff --git a/tests/keys/jwk_ec_pub_P-256.json b/tests/keys/jwk_ec_pub_P-256.json
index 13db2b38..029c6db5 100644
--- a/tests/keys/jwk_ec_pub_P-256.json
+++ b/tests/keys/jwk_ec_pub_P-256.json
@@ -2,6 +2,6 @@
   "kty": "EC",
   "kid": "bilbo.baggins.256@hobbiton.example",
   "crv": "P-256",
-  "x": "PTTjIY84aLtaZCxLTrG_d8I0G6YKCV7lg8M4xkKfwQ4=",
-  "y": "ank6KA34vv24HZLXlChVs85NEGlpg2sbqNmR_BcgyJU="
+  "x": "PTTjIY84aLtaZCxLTrG_d8I0G6YKCV7lg8M4xkKfwQ4",
+  "y": "ank6KA34vv24HZLXlChVs85NEGlpg2sbqNmR_BcgyJU"
 }
diff --git a/tests/test_algorithms.py b/tests/test_algorithms.py
index 319a38d4..0072e4a3 100644
--- a/tests/test_algorithms.py
+++ b/tests/test_algorithms.py
@@ -185,8 +185,8 @@ def test_ec_jwk_fails_on_invalid_json(self):
 
         valid_points = {
             "P-256": {
-                "x": "PTTjIY84aLtaZCxLTrG_d8I0G6YKCV7lg8M4xkKfwQ4=",
-                "y": "ank6KA34vv24HZLXlChVs85NEGlpg2sbqNmR_BcgyJU=",
+                "x": "PTTjIY84aLtaZCxLTrG_d8I0G6YKCV7lg8M4xkKfwQ4",
+                "y": "ank6KA34vv24HZLXlChVs85NEGlpg2sbqNmR_BcgyJU",
             },
             "P-384": {
                 "x": "IDC-5s6FERlbC4Nc_4JhKW8sd51AhixtMdNUtPxhRFP323QY6cwWeIA3leyZhz-J",