diff --git a/psalm.xml b/psalm.xml
index a685c85..a70a5b6 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -14,17 +14,6 @@
     </projectFiles>
 
     <issueHandlers>
-        <DocblockTypeContradiction errorLevel="info" />
-        <MixedArgument errorLevel="info" />
-        <MixedArgumentTypeCoercion errorLevel="info" />
-        <MixedAssignment errorLevel="info" />
-        <MixedPropertyTypeCoercion errorLevel="info" />
-        <PossiblyNullArgument errorLevel="info" />
-        <PossiblyNullOperand  errorLevel="info" />
-        <PossiblyNullReference errorLevel="info" />
         <PropertyNotSetInConstructor errorLevel="info" />
-        <RedundantCondition errorLevel="info" />
-        <RedundantConditionGivenDocblockType errorLevel="info" />
-        <TypeDoesNotContainType errorLevel="info" />
     </issueHandlers>
 </psalm>
diff --git a/src/MessageTrait.php b/src/MessageTrait.php
index 2ba4c50..d5851b3 100644
--- a/src/MessageTrait.php
+++ b/src/MessageTrait.php
@@ -128,6 +128,7 @@ public function getHeaders(): array
      * @return bool Returns true if any header names match the given header
      *     name using a case-insensitive string comparison. Returns false if
      *     no matching header name is found in the message.
+     * @psalm-suppress RedundantConditionGivenDocblockType
      */
     public function hasHeader($name): bool
     {
@@ -199,6 +200,7 @@ public function getHeaderLine($name): string
      * @param string|string[] $value Header value(s).
      * @return static
      * @throws InvalidArgumentException for invalid header names or values.
+     * @psalm-suppress MixedPropertyTypeCoercion
      */
     public function withHeader($name, $value): MessageInterface
     {
@@ -233,6 +235,7 @@ public function withHeader($name, $value): MessageInterface
      * @param string|string[] $value Header value(s).
      * @return static
      * @throws InvalidArgumentException for invalid header names or values.
+     * @psalm-suppress MixedPropertyTypeCoercion
      */
     public function withAddedHeader($name, $value): MessageInterface
     {
@@ -308,6 +311,7 @@ public function withBody(StreamInterface $body): MessageInterface
     /**
      * @param StreamInterface|string|resource $stream
      * @param string $mode
+     * @psalm-suppress RedundantConditionGivenDocblockType
      */
     private function registerStream($stream, string $mode = 'wb+'): void
     {
@@ -329,8 +333,9 @@ private function registerStream($stream, string $mode = 'wb+'): void
     }
 
     /**
-     * @param array $originalHeaders
+     * @param array<string, string|int|float> $originalHeaders
      * @throws InvalidArgumentException When the header name or header value is not valid.
+     * @psalm-suppress MixedPropertyTypeCoercion
      */
     private function registerHeaders(array $originalHeaders = []): void
     {
@@ -393,6 +398,7 @@ private function validateHeaderName($name): void
     /**
      * @param mixed $value
      * @throws InvalidArgumentException for invalid header value.
+     * @psalm-suppress MixedAssignment
      */
     private function validateHeaderValue($value): void
     {
@@ -415,7 +421,7 @@ private function validateHeaderValue($value): void
     }
 
     /**
-     * @param string $protocol
+     * @param mixed $protocol
      * @throws InvalidArgumentException for invalid HTTP protocol version.
      */
     private function validateProtocolVersion($protocol): void
diff --git a/src/RequestTrait.php b/src/RequestTrait.php
index 21e7688..1e13285 100644
--- a/src/RequestTrait.php
+++ b/src/RequestTrait.php
@@ -130,6 +130,7 @@ public function getMethod(): string
      * @param string $method Case-sensitive method.
      * @return static
      * @throws InvalidArgumentException for invalid HTTP methods.
+     * @psalm-suppress DocblockTypeContradiction
      */
     public function withMethod($method): RequestInterface
     {
@@ -216,6 +217,7 @@ public function withUri(UriInterface $uri, $preserveHost = false): RequestInterf
      * @param array $headers
      * @param StreamInterface|string|resource $body
      * @param string $protocol
+     * @psalm-suppress MixedArgumentTypeCoercion
      */
     private function init(
         string $method = 'GET',
@@ -239,6 +241,7 @@ private function init(
     /**
      * @param UriInterface|string $uri
      * @throws InvalidArgumentException for invalid URI.
+     * @psalm-suppress RedundantConditionGivenDocblockType
      */
     private function setUri($uri): void
     {
diff --git a/src/ResponseTrait.php b/src/ResponseTrait.php
index 4435cca..ef66375 100644
--- a/src/ResponseTrait.php
+++ b/src/ResponseTrait.php
@@ -30,7 +30,7 @@ trait ResponseTrait
      * Map of standard HTTP status code and reason phrases.
      *
      * @link https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
-     * @var array
+     * @var array<int, string>
      */
     private static array $phrases = [
         // Informational 1xx
@@ -144,6 +144,9 @@ public function getStatusCode(): int
      *     use the defaults as suggested in the HTTP specification.
      * @return static
      * @throws InvalidArgumentException for invalid status code arguments.
+     * @psalm-suppress DocblockTypeContradiction
+     * @psalm-suppress TypeDoesNotContainType
+     * @psalm-suppress RedundantCondition
      */
     public function withStatus($code, $reasonPhrase = ''): ResponseInterface
     {
@@ -181,6 +184,7 @@ public function withStatus($code, $reasonPhrase = ''): ResponseInterface
      * @link http://tools.ietf.org/html/rfc7231#section-6
      * @link http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
      * @return string Reason phrase; must return an empty string if none present.
+     * @psalm-suppress RedundantCondition
      */
     public function getReasonPhrase(): string
     {
@@ -193,6 +197,7 @@ public function getReasonPhrase(): string
      * @param StreamInterface|string|resource $body
      * @param array $headers
      * @param string $protocol
+     * @psalm-suppress MixedArgumentTypeCoercion
      */
     private function init(
         int $statusCode = 200,
diff --git a/src/ServerRequest.php b/src/ServerRequest.php
index 5dd8606..fc46c3f 100644
--- a/src/ServerRequest.php
+++ b/src/ServerRequest.php
@@ -157,6 +157,8 @@ public function getParsedBody()
 
     /**
      * {@inheritDoc}
+     *
+     * @psalm-suppress DocblockTypeContradiction
      */
     public function withParsedBody($data): self
     {
@@ -223,6 +225,7 @@ public function withoutAttribute($name): self
     /**
      * @param array $uploadedFiles
      * @throws InvalidArgumentException
+     * @psalm-suppress MixedAssignment
      */
     private function validateUploadedFiles(array $uploadedFiles): void
     {
diff --git a/src/StreamFactory.php b/src/StreamFactory.php
index 5f2c4d2..3c7061c 100644
--- a/src/StreamFactory.php
+++ b/src/StreamFactory.php
@@ -33,6 +33,8 @@ public function createStreamFromFile(string $filename, string $mode = 'r'): Stre
 
     /**
      * {@inheritdoc}
+     *
+     * @psalm-suppress DocblockTypeContradiction
      */
     public function createStreamFromResource($resource): StreamInterface
     {
diff --git a/src/StreamTrait.php b/src/StreamTrait.php
index 8eaa841..a021fa0 100644
--- a/src/StreamTrait.php
+++ b/src/StreamTrait.php
@@ -73,6 +73,7 @@ public function __toString(): string
      * Closes the stream and any underlying resources.
      *
      * @return void
+     * @psalm-suppress PossiblyNullArgument
      */
     public function close(): void
     {
@@ -196,6 +197,7 @@ public function rewind(): void
      * Returns whether or not the stream is writable.
      *
      * @return bool
+     * @psalm-suppress MixedAssignment
      */
     public function isWritable(): bool
     {
@@ -240,6 +242,7 @@ public function write($string): int
      * Returns whether or not the stream is readable.
      *
      * @return bool
+     * @psalm-suppress MixedAssignment
      */
     public function isReadable(): bool
     {
@@ -282,6 +285,7 @@ public function read($length): string
      *
      * @return string
      * @throws RuntimeException if unable to read or an error occurs while reading.
+     * @psalm-suppress PossiblyNullArgument
      */
     public function getContents(): string
     {
diff --git a/src/UploadedFile.php b/src/UploadedFile.php
index 4774794..4e9edf9 100644
--- a/src/UploadedFile.php
+++ b/src/UploadedFile.php
@@ -97,6 +97,7 @@ final class UploadedFile implements UploadedFileInterface
      * @param int $error
      * @param string|null $clientFilename
      * @param string|null $clientMediaType
+     * @psalm-suppress RedundantConditionGivenDocblockType
      */
     public function __construct(
         $streamOrFile,
@@ -145,6 +146,8 @@ public function __construct(
 
     /**
      * {@inheritdoc}
+     *
+     * @psalm-suppress PossiblyNullArgument
      */
     public function getStream(): StreamInterface
     {
@@ -165,6 +168,8 @@ public function getStream(): StreamInterface
 
     /**
      * {@inheritdoc}
+     *
+     * @psalm-suppress DocblockTypeContradiction
      */
     public function moveTo($targetPath): void
     {
@@ -237,6 +242,7 @@ public function getClientMediaType(): ?string
      * files via is_uploaded_file() and move_uploaded_file() or writes If SAPI is not used.
      *
      * @param string $targetPath
+     * @psalm-suppress PossiblyNullReference
      */
     private function moveOrWriteFile(string $targetPath): void
     {
diff --git a/src/Uri.php b/src/Uri.php
index 70da5d5..a4de43d 100644
--- a/src/Uri.php
+++ b/src/Uri.php
@@ -144,6 +144,8 @@ public function getScheme(): string
 
     /**
      * {@inheritDoc}
+     *
+     * @psalm-suppress PossiblyNullOperand
      */
     public function getAuthority(): string
     {
@@ -480,6 +482,7 @@ private function normalizeFragment(string $fragment): string
      * @param string $string
      * @param string $pattern
      * @return string
+     * @psalm-suppress MixedArgument
      */
     private function encode(string $string, string $pattern): string
     {