diff --git a/package-lock.json b/package-lock.json
index b3fb47c..a747889 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,10 +13,11 @@
         "config": "^3.1.0",
         "dom-storage": "^2.1.0",
         "imap": "^0.8.19",
-        "matrix-js-sdk": "^19.7.0",
+        "matrix-js-sdk": "^17.2.0",
         "olm": "https://matrix.org/packages/npm/olm/olm-3.0.0.tgz",
         "process": "^0.11.10"
-      }
+      },
+      "devDependencies": {}
     },
     "node_modules/@babel/runtime": {
       "version": "7.18.0",
@@ -94,9 +95,12 @@
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     "node_modules/base-x": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-4.0.0.tgz",
-      "integrity": "sha512-FuwxlW4H5kh37X/oW59pwTzzTKRzfrrQwhmyspRM7swOEZcHtDZSCt45U6oKgtuFE+WYPblePMVIPR4RZrh/hw=="
+      "version": "3.0.9",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.9.tgz",
+      "integrity": "sha512-H7JU6iBHTal1gp56aKoaa//YUxEaAOUiydvrV/pILqIHXTtqxSkATOnDA2u+jZ/61sD+L/412+7kzXRtWukhpQ==",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      }
     },
     "node_modules/bcrypt-pbkdf": {
       "version": "1.0.2",
@@ -115,11 +119,11 @@
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     "node_modules/bs58": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/bs58/-/bs58-5.0.0.tgz",
-      "integrity": "sha512-r+ihvQJvahgYT50JD05dyJNKlmmSlMoOGwn1lCcEzanPglg7TxYjioQUYehQ9mAR/+hOSd2jRc/Z2y5UxBymvQ==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/bs58/-/bs58-4.0.1.tgz",
+      "integrity": "sha512-Ok3Wdf5vOIlBrgCvTq96gBkJw+JUEzdBgyaza5HLtPm7yTHkjRy8+JzNyHF7BHa0bNWOQIp3m5YF0nnFcOIKLw==",
       "dependencies": {
-        "base-x": "^4.0.0"
+        "base-x": "^3.0.2"
       }
     },
     "node_modules/call-bind": {
@@ -432,18 +436,18 @@
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     },
     "node_modules/matrix-js-sdk": {
-      "version": "19.7.0",
-      "resolved": "https://registry.npmjs.org/matrix-js-sdk/-/matrix-js-sdk-19.7.0.tgz",
-      "integrity": "sha512-mFN1LBmEpYHCH6II1F8o7y8zJr0kn1yX7ga7tRXHbLJAlBS4bAXRsEoAzdv6OrV8/dS325JlVUYQLHFHQWjYxg==",
+      "version": "17.2.0",
+      "resolved": "https://registry.npmjs.org/matrix-js-sdk/-/matrix-js-sdk-17.2.0.tgz",
+      "integrity": "sha512-/IrgHCSVUZNVcKoPO20OF9Xog9X79a1ckmR7FwF5lSTNdmC7eQvU0XcFYCi5IXo57du+im69lEw8dLbPngZhoQ==",
       "dependencies": {
         "@babel/runtime": "^7.12.5",
         "another-json": "^0.2.0",
         "browser-request": "^0.3.3",
-        "bs58": "^5.0.0",
+        "bs58": "^4.0.1",
         "content-type": "^1.0.4",
         "loglevel": "^1.7.1",
         "matrix-events-sdk": "^0.0.1-beta.7",
-        "p-retry": "4",
+        "p-retry": "^4.5.0",
         "qs": "^6.9.6",
         "request": "^2.88.2",
         "unhomoglyph": "^1.0.6"
@@ -823,9 +827,12 @@
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     },
     "base-x": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-4.0.0.tgz",
-      "integrity": "sha512-FuwxlW4H5kh37X/oW59pwTzzTKRzfrrQwhmyspRM7swOEZcHtDZSCt45U6oKgtuFE+WYPblePMVIPR4RZrh/hw=="
+      "version": "3.0.9",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.9.tgz",
+      "integrity": "sha512-H7JU6iBHTal1gp56aKoaa//YUxEaAOUiydvrV/pILqIHXTtqxSkATOnDA2u+jZ/61sD+L/412+7kzXRtWukhpQ==",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
     },
     "bcrypt-pbkdf": {
       "version": "1.0.2",
@@ -841,11 +848,11 @@
       "integrity": "sha512-YyNI4qJJ+piQG6MMEuo7J3Bzaqssufx04zpEKYfSrl/1Op59HWali9zMtBpXnkmqMcOuWJPZvudrm9wISmnCbg=="
     },
     "bs58": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/bs58/-/bs58-5.0.0.tgz",
-      "integrity": "sha512-r+ihvQJvahgYT50JD05dyJNKlmmSlMoOGwn1lCcEzanPglg7TxYjioQUYehQ9mAR/+hOSd2jRc/Z2y5UxBymvQ==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/bs58/-/bs58-4.0.1.tgz",
+      "integrity": "sha512-Ok3Wdf5vOIlBrgCvTq96gBkJw+JUEzdBgyaza5HLtPm7yTHkjRy8+JzNyHF7BHa0bNWOQIp3m5YF0nnFcOIKLw==",
       "requires": {
-        "base-x": "^4.0.0"
+        "base-x": "^3.0.2"
       }
     },
     "call-bind": {
@@ -1086,18 +1093,18 @@
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     },
     "matrix-js-sdk": {
-      "version": "19.7.0",
-      "resolved": "https://registry.npmjs.org/matrix-js-sdk/-/matrix-js-sdk-19.7.0.tgz",
-      "integrity": "sha512-mFN1LBmEpYHCH6II1F8o7y8zJr0kn1yX7ga7tRXHbLJAlBS4bAXRsEoAzdv6OrV8/dS325JlVUYQLHFHQWjYxg==",
+      "version": "17.2.0",
+      "resolved": "https://registry.npmjs.org/matrix-js-sdk/-/matrix-js-sdk-17.2.0.tgz",
+      "integrity": "sha512-/IrgHCSVUZNVcKoPO20OF9Xog9X79a1ckmR7FwF5lSTNdmC7eQvU0XcFYCi5IXo57du+im69lEw8dLbPngZhoQ==",
       "requires": {
         "@babel/runtime": "^7.12.5",
         "another-json": "^0.2.0",
         "browser-request": "^0.3.3",
-        "bs58": "^5.0.0",
+        "bs58": "^4.0.1",
         "content-type": "^1.0.4",
         "loglevel": "^1.7.1",
         "matrix-events-sdk": "^0.0.1-beta.7",
-        "p-retry": "4",
+        "p-retry": "^4.5.0",
         "qs": "^6.9.6",
         "request": "^2.88.2",
         "unhomoglyph": "^1.0.6"
diff --git a/package.json b/package.json
index 3892b31..ce05dfa 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "config": "^3.1.0",
     "dom-storage": "^2.1.0",
     "imap": "^0.8.19",
-    "matrix-js-sdk": "^19.7.0",
+    "matrix-js-sdk": "^17.2.0",
     "olm": "https://matrix.org/packages/npm/olm/olm-3.0.0.tgz",
     "process": "^0.11.10"
   },